{"id":78577,"date":"2026-07-18T09:14:22","date_gmt":"2026-07-18T06:14:22","guid":{"rendered":"https:\/\/drivernew.com\/?p=78577"},"modified":"2026-07-18T09:14:22","modified_gmt":"2026-07-18T06:14:22","slug":"mac-can-print-but-cannot-detect-the-canon-ts9540-ts9550-or-ts9550a-scanner","status":"publish","type":"post","link":"https:\/\/drivernew.com\/?p=78577","title":{"rendered":"Mac Can Print but Cannot Detect the Canon TS9540, TS9550, or TS9550A Scanner"},"content":{"rendered":"<p>A Canon TS9500 Series printer may print normally from a Mac, while the scanning component of the multifunction printer does not appear in macOS. The <strong>Open Scanner<\/strong> button is missing from <strong>Printers &amp; Scanners<\/strong>, the <strong>Image Capture<\/strong> app does not display Canon, and IJ Scan Utility Lite reports that it cannot communicate with the scanner.<\/p>\n<p>In most cases, printing and scanning do not work together because the device was added incorrectly. For example, the printer may have been added manually by IP address as a standard print queue instead of as a Bonjour multifunction device.<\/p>\n<p>This guide applies to the following models:<\/p>\n<ul>\n<li>Canon PIXMA TS9540;<\/li>\n<li>Canon PIXMA TS9540A;<\/li>\n<li>Canon PIXMA TS9541C;<\/li>\n<li>Canon PIXMA TS9541CA;<\/li>\n<li>Canon PIXMA TS9550;<\/li>\n<li>Canon PIXMA TS9550A;<\/li>\n<li>Canon PIXMA TS9551C;<\/li>\n<li>Canon PIXMA TS9551CA.<\/li>\n<\/ul>\n<p>In macOS, these devices may appear under the common name:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Canon TS9500 series<\/pre>\n<p>The main steps apply to:<\/p>\n<ul>\n<li>macOS Tahoe 26;<\/li>\n<li>macOS Sequoia 15;<\/li>\n<li>macOS Sonoma 14;<\/li>\n<li>macOS Ventura 13;<\/li>\n<li>Mac computers with Apple silicon;<\/li>\n<li>Mac computers with Intel processors.<\/li>\n<\/ul>\n<div style=\"background-color: #fffbf0; border-left: 5px solid #ff9800; padding: 20px; margin: 25px 0; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.05);\">\n<p style=\"margin-top: 0;\"><strong>Do not reset the entire printing system as the first step<\/strong><\/p>\n<p>If printing works, first check system scanning, the Image Capture app, Local Network permission, and how the Canon device was added.<\/p>\n<p style=\"margin-bottom: 0;\">A full printing system reset removes all printers and queues from the Mac. In most cases, adding a new <strong>Bonjour Multifunction<\/strong> entry is enough to restore the scanner.<\/p>\n<\/div>\n<h2>Possible IJ Scan Utility Lite Messages<\/h2>\n<p>The following message may appear when a communication error occurs:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Cannot communicate with scanner for these reasons:\r\n- Scanner is turned off.\r\n- It is disconnected from Wired LAN.\r\n- Signal strength is poor due to obstructions.\r\n- Network connection is prohibited by security software.\r\n- Different scanner on the network is selected.<\/pre>\n<p>The error code may be:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Error 157<\/pre>\n<p>If the application installation is damaged or incomplete, the following message may appear:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">A required file is missing or corrupted, or settings are incorrect.\r\nTry the installation again.<\/pre>\n<p>Code:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Error 201<\/pre>\n<p>An internal error may also occur:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">An internal error has occurred.<\/pre>\n<p>Code:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Error 202<\/pre>\n<p>The message text may vary depending on the IJ Scan Utility Lite version and the macOS interface language.<\/p>\n<h2>First, Determine Which Part of Scanning Is Not Working<\/h2>\n<p>Two main scanning methods are available on a Mac:<\/p>\n<ul>\n<li>macOS system scanning through AirPrint;<\/li>\n<li>Canon scanning through IJ Scan Utility Lite.<\/li>\n<\/ul>\n<p>They use the same device, but a problem with one application does not always mean that the scanner is completely unavailable.<\/p>\n<h3>Situation 1: \u201cOpen Scanner\u201d Works, but IJ Scan Utility Lite Does Not<\/h3>\n<p>In this case:<\/p>\n<ul>\n<li>the scanner is recognized by macOS;<\/li>\n<li>the network connection is generally working;<\/li>\n<li>the problem is related to IJ Scan Utility Lite, the selected device, or application permissions.<\/li>\n<\/ul>\n<h3>Situation 2: Image Capture Detects Canon, but the Button Is Missing from Settings<\/h3>\n<p>Try scanning through Image Capture, and then remove and add the multifunction printer again as Bonjour Multifunction.<\/p>\n<h3>Situation 3: Printing Works, but the Scanner Is Missing Everywhere<\/h3>\n<p>The most likely causes are:<\/p>\n<ul>\n<li>the printer was added by IP address for printing only;<\/li>\n<li>the selected entry is not a Bonjour Multifunction device;<\/li>\n<li>Bonjour is disabled on the printer;<\/li>\n<li>the Mac is using an old queue;<\/li>\n<li>a network filter is blocking scanner discovery;<\/li>\n<li>the printer and Mac are on different network segments.<\/li>\n<\/ul>\n<h2>Step 1: Check the Scanner Without a Computer<\/h2>\n<p>Make a standard copy to check the scanning unit.<\/p>\n<ol>\n<li>Turn on the Canon printer.<\/li>\n<li>Wait for the Home screen to appear.<\/li>\n<li>Place a document face down on the scanner glass.<\/li>\n<li>Load A4 paper.<\/li>\n<li>Select <strong>Copy<\/strong>.<\/li>\n<li>Tap <strong>Black<\/strong>.<\/li>\n<\/ol>\n<p>If the copy is produced normally:<\/p>\n<ul>\n<li>the scanning unit is working;<\/li>\n<li>the scanner glass and cover are being detected;<\/li>\n<li>the problem should be investigated in macOS, the network, or the Canon application.<\/li>\n<\/ul>\n<p>If copying is unavailable or a support code appears on the screen, resolve the hardware error first.<\/p>\n<h2>Step 2: Check the macOS System Scanner<\/h2>\n<ol>\n<li>Open the <strong>Apple<\/strong> menu.<\/li>\n<li>Select <strong>System Settings<\/strong>.<\/li>\n<li>Open <strong>Printers &amp; Scanners<\/strong>.<\/li>\n<li>Select Canon TS9500 Series.<\/li>\n<\/ol>\n<p>Check whether the following button is available:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Open Scanner<\/pre>\n<h3>If the Button Is Available<\/h3>\n<ol>\n<li>Click <strong>Open Scanner<\/strong>.<\/li>\n<li>Place a document on the scanner glass.<\/li>\n<li>Click <strong>Show Details<\/strong> if necessary.<\/li>\n<li>Select the scanning source.<\/li>\n<li>Set the resolution to 300 dpi.<\/li>\n<li>Select the destination folder.<\/li>\n<li>Click <strong>Scan<\/strong>.<\/li>\n<\/ol>\n<p>If system scanning works, do not remove the working queue. Proceed to the section about restoring IJ Scan Utility Lite.<\/p>\n<h3>If the Button Is Missing<\/h3>\n<p>The current queue was probably created for printing only. Add a new Canon entry as a Bonjour multifunction device.<\/p>\n<h2>Step 3: Check Canon in the Image Capture App<\/h2>\n<p>Image Capture is a built-in macOS application. IJ Scan Utility Lite is not required to use it.<\/p>\n<ol>\n<li>Press <strong>Command + Space<\/strong>.<\/li>\n<li>Enter:\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Image Capture<\/pre>\n<\/li>\n<li>Open the application.<\/li>\n<li>Check the left side of the window.<\/li>\n<\/ol>\n<p>Canon may appear in one of the following sections:<\/p>\n<ul>\n<li><strong>Devices<\/strong> \u2014 when connected via USB;<\/li>\n<li><strong>Shared<\/strong> \u2014 when connected over a network.<\/li>\n<\/ul>\n<h3>If Canon Is Displayed<\/h3>\n<ol>\n<li>Select Canon TS9500 Series.<\/li>\n<li>Click <strong>Show Details<\/strong> if available.<\/li>\n<li>Select the flatbed scanner or document feeder.<\/li>\n<li>Select the file format.<\/li>\n<li>Specify the destination folder.<\/li>\n<li>Click <strong>Scan<\/strong>.<\/li>\n<\/ol>\n<p>If Image Capture can scan, the macOS system component is working. The error is related to IJ Scan Utility Lite or the settings of a specific application.<\/p>\n<h3>If Canon Is Missing<\/h3>\n<p>Continue checking:<\/p>\n<ul>\n<li>the network connection;<\/li>\n<li>Bonjour;<\/li>\n<li>how the device was added;<\/li>\n<li>the USB connection;<\/li>\n<li>Local Network permissions.<\/li>\n<\/ul>\n<h2>Step 4: Check Scanning Through the Preview App<\/h2>\n<ol>\n<li>Open the <strong>Preview<\/strong> application.<\/li>\n<li>Open the <strong>File<\/strong> menu.<\/li>\n<li>Find the command for importing from a scanner.<\/li>\n<li>Select Canon TS9500 Series.<\/li>\n<\/ol>\n<p>Depending on the macOS version, the command may be called:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Import from Scanner<\/pre>\n<p>or it may contain the Canon device name directly.<\/p>\n<p>If Canon is missing from both Preview and Image Capture, add the multifunction printer again through Bonjour Multifunction.<\/p>\n<h2>Method 1: Add a New Bonjour Multifunction Entry<\/h2>\n<p>This is the main solution when printing works through a queue added by IP address, but the scanner is unavailable.<\/p>\n<div style=\"background-color: #fffbf0; border-left: 5px solid #ff9800; padding: 20px; margin: 25px 0; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.05);\">\n<p style=\"margin-top: 0;\"><strong>Do not remove the working queue in advance<\/strong><\/p>\n<p style=\"margin-bottom: 0;\">First, add a second entry and test scanning. Remove the old queue only after the new one has been tested successfully.<\/p>\n<\/div>\n<h3>Add the Device<\/h3>\n<ol>\n<li>Open <strong>Apple \u2192 System Settings<\/strong>.<\/li>\n<li>Select <strong>Printers &amp; Scanners<\/strong>.<\/li>\n<li>Click <strong>Add Printer, Scanner, or Fax<\/strong>.<\/li>\n<li>Open the <strong>Default<\/strong> tab.<\/li>\n<li>Wait one or two minutes.<\/li>\n<\/ol>\n<h3>Select the Correct Entry<\/h3>\n<ol>\n<li>Find Canon TS9500 Series.<\/li>\n<li>Select the entry whose type is:\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Bonjour Multifunction<\/pre>\n<\/li>\n<li>In the <strong>Use<\/strong> field, select:\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Secure AirPrint<\/pre>\n<\/li>\n<li>If Secure AirPrint is unavailable, select <strong>AirPrint<\/strong>.<\/li>\n<li>Do not select software intended for another model.<\/li>\n<\/ol>\n<h3>Assign a Temporary Name<\/h3>\n<p>To distinguish the new entry, enter:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Canon TS9500 AirPrint Scanner<\/pre>\n<ol start=\"6\">\n<li>Click <strong>Add<\/strong>.<\/li>\n<li>Wait for the process to finish.<\/li>\n<li>Select the new entry.<\/li>\n<li>Check for the <strong>Open Scanner<\/strong> button.<\/li>\n<\/ol>\n<p>If the button appears and scanning works, remove the old queue that was created for printing only.<\/p>\n<h2>Why Adding the Printer by IP Address May Not Display the Scanner<\/h2>\n<p>When a printer is added manually through the <strong>IP<\/strong> tab, macOS creates a queue for sending print jobs. This queue does not always register all multifunction device features.<\/p>\n<p>This is especially likely if one of the following was used:<\/p>\n<ul>\n<li>IPP;<\/li>\n<li>LPD;<\/li>\n<li>HP Jetdirect \u2014 Socket;<\/li>\n<li>a generic PostScript driver;<\/li>\n<li>a driver intended for another model.<\/li>\n<\/ul>\n<p>For combined printing and scanning, the preferred entry is:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Bonjour Multifunction \u2192 Secure AirPrint<\/pre>\n<h2>Method 2: Check the Mac and Canon Network<\/h2>\n<p>Even if printing works, IJ Scan Utility Lite may search for the device using a different network discovery method.<\/p>\n<h3>Check the Network on the Mac<\/h3>\n<ol>\n<li>Open <strong>System Settings<\/strong>.<\/li>\n<li>Select <strong>Wi-Fi<\/strong>.<\/li>\n<li>Write down the name of the active network.<\/li>\n<\/ol>\n<h3>Check the Network on the Canon Printer<\/h3>\n<ol>\n<li>Tap the network icon on the touchscreen.<\/li>\n<li>Select <strong>Wi-Fi<\/strong>.<\/li>\n<li>Open the connection information.<\/li>\n<li>Check the SSID network name.<\/li>\n<\/ol>\n<p>The Mac and Canon printer must be on the same local network.<\/p>\n<h3>Do Not Use a Guest Network<\/h3>\n<p>A guest network often blocks communication between connected devices.<\/p>\n<p>Do not use a network whose name contains:<\/p>\n<ul>\n<li>Guest;<\/li>\n<li>Guest Network;<\/li>\n<li>Visitor;<\/li>\n<li>Public;<\/li>\n<li>Hotspot.<\/li>\n<\/ul>\n<h3>Temporarily Disable the VPN<\/h3>\n<ol>\n<li>Quit the VPN application.<\/li>\n<li>Open <strong>System Settings \u2192 VPN<\/strong> if that section is displayed.<\/li>\n<li>Disconnect the active connection.<\/li>\n<li>Quit IJ Scan Utility Lite completely.<\/li>\n<li>Open the application again.<\/li>\n<\/ol>\n<p>If the scanner appears, enable local network access in the VPN application.<\/p>\n<h2>Method 3: Restart the Printer, Mac, and Router<\/h2>\n<ol>\n<li>Quit IJ Scan Utility Lite.<\/li>\n<li>Quit Image Capture.<\/li>\n<li>Turn off the Canon printer using the power button.<\/li>\n<li>Shut down the Mac.<\/li>\n<li>Disconnect the router from the power supply.<\/li>\n<li>Wait approximately one minute.<\/li>\n<li>Turn on the router.<\/li>\n<li>Wait until Wi-Fi is fully restored.<\/li>\n<li>Turn on the Canon printer.<\/li>\n<li>Wait for the network icon to appear.<\/li>\n<li>Turn on the Mac.<\/li>\n<li>Wait one or two minutes.<\/li>\n<li>Check <strong>Open Scanner<\/strong> and Image Capture.<\/li>\n<\/ol>\n<p>After startup, the device may need some time to register its Bonjour services again.<\/p>\n<h2>Method 4: Check Local Network Permission<\/h2>\n<p>This section is especially important for macOS Sequoia 15, macOS Tahoe 26, and later versions.<\/p>\n<p>Canon states that the following items may appear in the permission list:<\/p>\n<ul>\n<li>Canon IJ Scan Utility Lite;<\/li>\n<li>CIJSULAgent;<\/li>\n<li>Canon Setup;<\/li>\n<li>other Canon components.<\/li>\n<\/ul>\n<ol>\n<li>Open the <strong>Apple<\/strong> menu.<\/li>\n<li>Select <strong>System Settings<\/strong>.<\/li>\n<li>Open <strong>Privacy &amp; Security<\/strong>.<\/li>\n<li>Select <strong>Local Network<\/strong>.<\/li>\n<li>Find <strong>Canon IJ Scan Utility Lite<\/strong>.<\/li>\n<li>Turn on the switch.<\/li>\n<li>Find <strong>CIJSULAgent<\/strong>.<\/li>\n<li>Turn on its switch as well.<\/li>\n<li>Allow access for any other Canon components you use.<\/li>\n<li>Close System Settings.<\/li>\n<li>Quit IJ Scan Utility Lite completely.<\/li>\n<li>Open the application again.<\/li>\n<\/ol>\n<div style=\"background-color: #fffbf0; border-left: 5px solid #ff9800; padding: 20px; margin: 25px 0; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.05);\">\n<p style=\"margin-top: 0;\"><strong>Allow more than just the main application<\/strong><\/p>\n<p style=\"margin-bottom: 0;\">IJ Scan Utility Lite may use the CIJSULAgent background component. If permission is enabled only for the main application window, the network scanner may still fail to appear.<\/p>\n<\/div>\n<h3>If the Application Is Not Listed<\/h3>\n<ol>\n<li>Start IJ Scan Utility Lite.<\/li>\n<li>Click the button to refresh the scanner list.<\/li>\n<li>Wait for the macOS permission request.<\/li>\n<li>Click <strong>Allow<\/strong>.<\/li>\n<\/ol>\n<p>If the request does not appear:<\/p>\n<ol>\n<li>quit the application;<\/li>\n<li>restart the Mac;<\/li>\n<li>open IJ Scan Utility Lite again;<\/li>\n<li>repeat device discovery.<\/li>\n<\/ol>\n<h2>Method 5: Select the Correct Scanner in IJ Scan Utility Lite<\/h2>\n<h3>Start the Application<\/h3>\n<ol>\n<li>Open Finder.<\/li>\n<li>From the menu bar, select <strong>Go<\/strong>.<\/li>\n<li>Open <strong>Applications<\/strong>.<\/li>\n<li>Open the <strong>Canon Utilities<\/strong> folder.<\/li>\n<li>Open the <strong>IJ Scan Utility<\/strong> folder.<\/li>\n<li>Start <strong>Canon IJ Scan Utility Lite<\/strong>.<\/li>\n<\/ol>\n<h3>Check the Scanner or Product Name Field<\/h3>\n<p>Depending on the application version, the field may be called:<\/p>\n<ul>\n<li><strong>Scanner<\/strong>;<\/li>\n<li><strong>Product Name<\/strong>.<\/li>\n<\/ul>\n<ol>\n<li>Open the device list.<\/li>\n<li>Select the Bonjour name of your Canon printer.<\/li>\n<li>Do not select another printer from the same series.<\/li>\n<li>If USB is being used, select the entry marked as a USB device.<\/li>\n<\/ol>\n<p>The network device may appear as:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Canon TS9500 series<\/pre>\n<p>or under a custom Bonjour service name.<\/p>\n<h3>Refresh the List<\/h3>\n<ol>\n<li>Click the <strong>Refresh<\/strong> icon next to the scanner list.<\/li>\n<li>Wait several seconds.<\/li>\n<li>Open the list again.<\/li>\n<\/ol>\n<p>If the Bonjour service name was changed recently:<\/p>\n<ol>\n<li>quit IJ Scan Utility Lite;<\/li>\n<li>wait for a short time;<\/li>\n<li>open the application again;<\/li>\n<li>click <strong>Refresh<\/strong>;<\/li>\n<li>select the new name.<\/li>\n<\/ol>\n<h2>If Another Canon Device Is Selected<\/h2>\n<p>Error 157 may appear if the application is trying to communicate with another device on the network.<\/p>\n<p>This may happen when:<\/p>\n<ul>\n<li>several Canon printers are installed in the office;<\/li>\n<li>the router was replaced;<\/li>\n<li>the Bonjour name was changed;<\/li>\n<li>an old printer was removed, but its name remains in the application;<\/li>\n<li>Wireless Direct was previously used;<\/li>\n<li>a USB connection was previously used.<\/li>\n<\/ul>\n<p>Select the actual device in the Scanner or Product Name field.<\/p>\n<h2>Method 6: Check Bonjour on the Printer<\/h2>\n<p>IJ Scan Utility Lite cannot use a network-connected Canon device if Bonjour is disabled.<\/p>\n<ol>\n<li>On the Canon Home screen, select <strong>Setup<\/strong>.<\/li>\n<li>Open <strong>Device settings<\/strong>.<\/li>\n<li>Select <strong>LAN settings<\/strong>.<\/li>\n<li>Select the connection being used.<\/li>\n<li>Open the advanced settings.<\/li>\n<li>Select <strong>Bonjour settings<\/strong>.<\/li>\n<li>Set the Bonjour enable option to <strong>Enable<\/strong>.<\/li>\n<\/ol>\n<p>Also check the Bonjour service name.<\/p>\n<p>After changing the setting:<\/p>\n<ol>\n<li>turn off the Canon printer;<\/li>\n<li>turn it on again;<\/li>\n<li>wait one or two minutes;<\/li>\n<li>restart IJ Scan Utility Lite;<\/li>\n<li>refresh the scanner list.<\/li>\n<\/ol>\n<h2>Method 7: Check the IP Address Through Safari<\/h2>\n<ol>\n<li>Open the network information on the Canon screen.<\/li>\n<li>Write down the IPv4 address.<\/li>\n<\/ol>\n<p>Example:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">192.168.1.125<\/pre>\n<p>Use your device\u2019s actual address, not the value from this example.<\/p>\n<ol start=\"3\">\n<li>Open Safari.<\/li>\n<li>Enter the Canon printer\u2019s IP address.<\/li>\n<li>Press Enter.<\/li>\n<\/ol>\n<p>If Remote UI opens, the Mac has network access to the printer.<\/p>\n<p>If the web page does not open:<\/p>\n<ul>\n<li>check the Wi-Fi network;<\/li>\n<li>disable the VPN;<\/li>\n<li>restart the router;<\/li>\n<li>check whether a guest network is being used;<\/li>\n<li>check wireless client isolation;<\/li>\n<li>check the firewall.<\/li>\n<\/ul>\n<h2>Method 8: Check Security Software<\/h2>\n<p>Error 157 may indicate that the network connection is being blocked by security software.<\/p>\n<p>Check:<\/p>\n<ul>\n<li>third-party antivirus software;<\/li>\n<li>a network filter;<\/li>\n<li>a corporate VPN;<\/li>\n<li>a DNS filter;<\/li>\n<li>an outbound connection control application;<\/li>\n<li>office firewall settings.<\/li>\n<\/ul>\n<p>For troubleshooting, temporarily pause only the third-party network filter and restart IJ Scan Utility Lite.<\/p>\n<p>Do not disable macOS security permanently. After testing, create permission for:<\/p>\n<ul>\n<li>Canon IJ Scan Utility Lite;<\/li>\n<li>CIJSULAgent;<\/li>\n<li>Canon local connections;<\/li>\n<li>Bonjour services.<\/li>\n<\/ul>\n<h2>Method 9: Check the macOS Firewall<\/h2>\n<ol>\n<li>Open <strong>System Settings<\/strong>.<\/li>\n<li>Go to <strong>Network<\/strong>.<\/li>\n<li>Open <strong>Firewall<\/strong>.<\/li>\n<li>Check the advanced settings.<\/li>\n<\/ol>\n<p>If all incoming connections are being blocked, temporarily disable only this option for testing.<\/p>\n<p>Restore the secure settings after troubleshooting.<\/p>\n<h2>Method 10: Check USB Scanning<\/h2>\n<p>A USB connection helps determine whether the problem is related to the network.<\/p>\n<h3>Connect the Printer Directly<\/h3>\n<ol>\n<li>Turn on the Canon printer.<\/li>\n<li>Connect a USB Type-B cable to the printer.<\/li>\n<li>Connect the other end directly to the Mac.<\/li>\n<li>Do not use a USB hub for the initial test.<\/li>\n<li>Do not use an old docking station.<\/li>\n<li>Wait several minutes.<\/li>\n<\/ol>\n<h3>Check macOS<\/h3>\n<ol>\n<li>Open <strong>Printers &amp; Scanners<\/strong>.<\/li>\n<li>Select the Canon USB entry.<\/li>\n<li>Check for the <strong>Open Scanner<\/strong> button.<\/li>\n<li>Open Image Capture.<\/li>\n<li>Check for Canon in the <strong>Devices<\/strong> section.<\/li>\n<\/ol>\n<h3>Check IJ Scan Utility Lite<\/h3>\n<ol>\n<li>Start IJ Scan Utility Lite.<\/li>\n<li>Open the scanner list.<\/li>\n<li>Select the Canon entry marked as a USB device.<\/li>\n<li>Click <strong>Document<\/strong>.<\/li>\n<\/ol>\n<p>If USB scanning works but network scanning does not, the problem is related to:<\/p>\n<ul>\n<li>Bonjour;<\/li>\n<li>network permissions;<\/li>\n<li>the router;<\/li>\n<li>the VPN;<\/li>\n<li>the selected network scanner.<\/li>\n<\/ul>\n<h2>If the Mac Cannot Detect Canon Even over USB<\/h2>\n<ol>\n<li>Try another USB port.<\/li>\n<li>Try another cable.<\/li>\n<li>If USB-C is being used, replace the adapter.<\/li>\n<li>Do not connect the printer through a monitor.<\/li>\n<li>Restart the Mac.<\/li>\n<\/ol>\n<p>Check whether the device is physically detected:<\/p>\n<ol>\n<li>Hold down the <strong>Option<\/strong> key.<\/li>\n<li>Open the <strong>Apple<\/strong> menu.<\/li>\n<li>Select <strong>System Information<\/strong>.<\/li>\n<li>Open the <strong>USB<\/strong> section.<\/li>\n<li>Find Canon TS9500 Series.<\/li>\n<\/ol>\n<p>If Canon is missing even from the USB section, check the cable, adapter, Mac port, and the multifunction printer\u2019s USB connector.<\/p>\n<h2>Method 11: Reinstall IJ Scan Utility Lite<\/h2>\n<p>Reinstallation is required if the following error appears:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">Error 201<\/pre>\n<p>or if the application does not start, closes unexpectedly, or does not save the selected scanner.<\/p>\n<h3>Before Reinstalling<\/h3>\n<ol>\n<li>Quit IJ Scan Utility Lite.<\/li>\n<li>Quit all scanning applications.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Check system scanning through Image Capture.<\/li>\n<\/ol>\n<p>If system scanning works, the problem is limited to the Canon application.<\/p>\n<h3>Download the Current Version<\/h3>\n<ol>\n<li>Open the official Canon support page for your model.<\/li>\n<li>Select the actual macOS version.<\/li>\n<li>Find IJ Scan Utility Lite or the recommended scanning package.<\/li>\n<li>Download the current installer.<\/li>\n<li>Do not use the old file from the supplied disc.<\/li>\n<li>Do not download the application from a third-party website.<\/li>\n<\/ol>\n<h3>Install the Application<\/h3>\n<ol>\n<li>Open the downloaded Canon file.<\/li>\n<li>Start the installer.<\/li>\n<li>Follow the macOS prompts.<\/li>\n<li>Enter the administrator password if requested.<\/li>\n<li>Allow the application to access the local network.<\/li>\n<li>Restart the Mac after installation.<\/li>\n<li>Start IJ Scan Utility Lite.<\/li>\n<li>Refresh the scanner list.<\/li>\n<li>Select the Canon Bonjour name.<\/li>\n<\/ol>\n<h2>If macOS Blocks the Installer<\/h2>\n<p>The following message may appear:<\/p>\n<pre style=\"background: #f4f4f4; border: 1px solid #ddd; padding: 12px; white-space: pre-wrap; overflow-x: auto;\">\u201cApplication\u201d can\u2019t be opened because Apple cannot check it for malicious software.<\/pre>\n<p>In this case:<\/p>\n<ol>\n<li>do not disable Gatekeeper completely;<\/li>\n<li>make sure the file was downloaded from the official Canon website;<\/li>\n<li>delete the old installer;<\/li>\n<li>select the correct macOS version on the Canon website;<\/li>\n<li>download the package again.<\/li>\n<\/ol>\n<p>If no current package is available for your version of macOS, use AirPrint system scanning through Image Capture.<\/p>\n<h2>Method 12: Resolve Error 157<\/h2>\n<p>Perform the following steps in order:<\/p>\n<ol>\n<li>Make sure the Canon printer is turned on.<\/li>\n<li>Check the Wi-Fi or Ethernet connection.<\/li>\n<li>Connect the Mac to the same network.<\/li>\n<li>Disable the VPN.<\/li>\n<li>Quit other scanning applications.<\/li>\n<li>Enable Local Network access for IJ Scan Utility Lite and CIJSULAgent.<\/li>\n<li>Check Bonjour.<\/li>\n<li>Open the Scanner or Product Name list.<\/li>\n<li>Select the correct Canon device.<\/li>\n<li>Click <strong>Refresh<\/strong>.<\/li>\n<li>Restart the application.<\/li>\n<li>Restart the Mac.<\/li>\n<\/ol>\n<p>If the error remains, check USB scanning.<\/p>\n<h2>Method 13: Resolve Error 201<\/h2>\n<p>Error 201 means that a required file is missing or damaged, or that the application settings are incorrect.<\/p>\n<ol>\n<li>Quit IJ Scan Utility Lite.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Check the available disk space.<\/li>\n<li>Download the current package from the Canon website.<\/li>\n<li>Reinstall IJ Scan Utility Lite.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Allow Local Network access.<\/li>\n<li>Select the correct device.<\/li>\n<\/ol>\n<h2>Method 14: Resolve Error 202<\/h2>\n<p>Error 202 indicates an internal error in the application or scanning component.<\/p>\n<ol>\n<li>Check the Canon printer\u2019s screen.<\/li>\n<li>Turn off the multifunction printer.<\/li>\n<li>Quit IJ Scan Utility Lite.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Turn on the Canon printer.<\/li>\n<li>Try scanning again.<\/li>\n<li>If the error remains, reinstall the current Canon software.<\/li>\n<\/ol>\n<h2>If the Scanner Is Being Used by Another Application<\/h2>\n<p>Usually, only one application can use the scanner at a time.<\/p>\n<p>Quit:<\/p>\n<ul>\n<li>Image Capture;<\/li>\n<li>Preview;<\/li>\n<li>IJ Scan Utility Lite;<\/li>\n<li>Adobe Acrobat;<\/li>\n<li>the OCR application;<\/li>\n<li>another scanning application;<\/li>\n<li>an application running under another Mac user account.<\/li>\n<\/ul>\n<p>Then open only one application and try scanning again.<\/p>\n<h2>If Scanning Disappears After the Mac Wakes from Sleep<\/h2>\n<ol>\n<li>Wake the Canon printer\u2019s screen.<\/li>\n<li>Check the network icon.<\/li>\n<li>Wait approximately one minute.<\/li>\n<li>Quit IJ Scan Utility Lite.<\/li>\n<li>Open the application again.<\/li>\n<li>Click <strong>Refresh<\/strong>.<\/li>\n<li>Select the Canon printer again.<\/li>\n<\/ol>\n<p>If the device does not appear:<\/p>\n<ol>\n<li>turn Wi-Fi off and on again on the Mac;<\/li>\n<li>disable the VPN;<\/li>\n<li>open Remote UI through the IP address;<\/li>\n<li>restart the Canon printer;<\/li>\n<li>add a new Bonjour Multifunction entry.<\/li>\n<\/ol>\n<h2>If Scanning Disappeared After the Router Was Replaced<\/h2>\n<p>After a new router is installed, the following may change:<\/p>\n<ul>\n<li>the network name;<\/li>\n<li>the password;<\/li>\n<li>the Canon printer\u2019s IP address;<\/li>\n<li>the subnet;<\/li>\n<li>device isolation settings.<\/li>\n<\/ul>\n<ol>\n<li>Connect the Canon printer to the new network.<\/li>\n<li>Check the SSID on the printer.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Do not remove the old working queue yet.<\/li>\n<li>Add a new Bonjour Multifunction entry.<\/li>\n<li>Select Secure AirPrint.<\/li>\n<li>Open IJ Scan Utility Lite.<\/li>\n<li>Refresh the list.<\/li>\n<li>Select the new Bonjour name.<\/li>\n<\/ol>\n<h2>If Scanning Works over Wi-Fi but Not over Ethernet<\/h2>\n<p>Check:<\/p>\n<ul>\n<li>whether the wired LAN is enabled on the Canon printer;<\/li>\n<li>whether the cable is connected to the router;<\/li>\n<li>whether an IPv4 address was obtained;<\/li>\n<li>whether the Mac is on the same local network;<\/li>\n<li>whether a new Bonjour entry appeared;<\/li>\n<li>whether the correct device is selected in IJ Scan Utility Lite.<\/li>\n<\/ul>\n<p>After switching from Wi-Fi to Ethernet, the Bonjour name or network address may change. Refresh the scanner list.<\/p>\n<h2>If Scanning Works over Ethernet but Not over Wi-Fi<\/h2>\n<p>Possible causes include:<\/p>\n<ul>\n<li>a weak signal;<\/li>\n<li>a guest network;<\/li>\n<li>wireless client isolation;<\/li>\n<li>the Mac being connected to another access point;<\/li>\n<li>a VPN blocking local traffic;<\/li>\n<li>Wi-Fi being disabled on the Canon printer.<\/li>\n<\/ul>\n<p>For stable regular use, you can continue using Ethernet. The Mac can remain connected to the router over Wi-Fi.<\/p>\n<h2>If the Mac Is Not Displayed on the Printer\u2019s Operation Panel<\/h2>\n<p>This is a separate function that sends scanned data from the Canon operation panel to the computer.<\/p>\n<p>It usually requires:<\/p>\n<ul>\n<li>IJ Scan Utility Lite to be installed;<\/li>\n<li>the Canon background component to be running;<\/li>\n<li>Local Network permission;<\/li>\n<li>the correct Canon device to be selected;<\/li>\n<li>both devices to be on the same local network;<\/li>\n<li>firewall permission.<\/li>\n<\/ul>\n<ol>\n<li>Start IJ Scan Utility Lite.<\/li>\n<li>Allow Local Network access for IJ Scan Utility Lite and CIJSULAgent.<\/li>\n<li>Select the Canon device in the scanner list.<\/li>\n<li>Do not close the Canon background components.<\/li>\n<li>Open the scanning menu on the multifunction printer\u2019s operation panel again.<\/li>\n<\/ol>\n<p>You do not have to use the Canon operation panel for standard scanning from the computer.<\/p>\n<h2>If Printing and \u201cOpen Scanner\u201d Work, Is IJ Scan Utility Lite Required?<\/h2>\n<p>The additional application is not required if the macOS features are sufficient.<\/p>\n<p>Without IJ Scan Utility Lite, you can use:<\/p>\n<ul>\n<li>Printers &amp; Scanners;<\/li>\n<li>Image Capture;<\/li>\n<li>Preview;<\/li>\n<li>AirPrint scanning.<\/li>\n<\/ul>\n<p>IJ Scan Utility Lite is useful for:<\/p>\n<ul>\n<li>preset <strong>Document<\/strong> and <strong>Photo<\/strong> modes;<\/li>\n<li>saving multipage PDF files;<\/li>\n<li>automatic original detection;<\/li>\n<li>scanning several photos;<\/li>\n<li>OCR;<\/li>\n<li>custom settings;<\/li>\n<li>configuring actions from the Canon operation panel.<\/li>\n<\/ul>\n<h2>Do Not Grant Unnecessary Permissions<\/h2>\n<p>Local Network permission is usually sufficient to detect a network-connected Canon device.<\/p>\n<p>Do not enable the following unless necessary:<\/p>\n<ul>\n<li>Full Disk Access;<\/li>\n<li>camera access;<\/li>\n<li>microphone access;<\/li>\n<li>permission to control other applications;<\/li>\n<li>Accessibility access.<\/li>\n<\/ul>\n<p>If the application cannot save a file, check permission for the selected folder separately.<\/p>\n<h2>If the Scan Is Not Saved<\/h2>\n<p>The scanner may work, but the application may be unable to write the completed file.<\/p>\n<p>Check:<\/p>\n<ul>\n<li>available disk space;<\/li>\n<li>the destination folder;<\/li>\n<li>permission to access the folder;<\/li>\n<li>whether the external drive is available;<\/li>\n<li>whether the file is write-protected.<\/li>\n<\/ul>\n<p>For errors 242, 243, or 244, select another folder, such as <strong>Pictures<\/strong>, and scan again.<\/p>\n<h2>Reset the Entire Printing System<\/h2>\n<p>If printing works, a full reset is usually unnecessary.<\/p>\n<p>Consider it only when:<\/p>\n<ul>\n<li>a damaged entry cannot be removed;<\/li>\n<li>a new Bonjour Multifunction entry cannot be added;<\/li>\n<li>unrepairable duplicate entries remain in the list;<\/li>\n<li>both printing and scanning have disappeared;<\/li>\n<li>removing and adding the printer normally did not help.<\/li>\n<\/ul>\n<div style=\"background-color: #fffbf0; border-left: 5px solid #ff9800; padding: 20px; margin: 25px 0; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.05);\">\n<p style=\"margin-top: 0;\"><strong>A reset removes all printers<\/strong><\/p>\n<p style=\"margin-bottom: 0;\">After the procedure, you will need to add the Canon printer and all other printers configured on this Mac again.<\/p>\n<\/div>\n<ol>\n<li>Open <strong>System Settings \u2192 Printers &amp; Scanners<\/strong>.<\/li>\n<li>Hold down the <strong>Control<\/strong> key and click a device.<\/li>\n<li>Select <strong>Reset printing system<\/strong>.<\/li>\n<li>Confirm the action.<\/li>\n<li>Restart the Mac.<\/li>\n<li>Add the Canon printer as Bonjour Multifunction.<\/li>\n<li>Select Secure AirPrint.<\/li>\n<\/ol>\n<h2>When the Problem Is Not Related to macOS<\/h2>\n<p>Mac settings will not help if:<\/p>\n<ul>\n<li>the Canon printer cannot make copies;<\/li>\n<li>the scanning unit does not move;<\/li>\n<li>a hardware support code is displayed;<\/li>\n<li>the scanner module is damaged;<\/li>\n<li>the multifunction printer does not turn on;<\/li>\n<li>USB is not detected on several computers;<\/li>\n<li>the Canon printer cannot connect to any network;<\/li>\n<li>a loud cracking noise can be heard after startup;<\/li>\n<li>liquid entered the device.<\/li>\n<\/ul>\n<h2>When a Network Administrator Is Required<\/h2>\n<p>Contact the administrator if:<\/p>\n<ul>\n<li>the Mac and Canon printer are in different VLANs;<\/li>\n<li>Bonjour is blocked on the network;<\/li>\n<li>multicast traffic is prohibited;<\/li>\n<li>a corporate VPN is being used;<\/li>\n<li>the printer is available only through a print server;<\/li>\n<li>the firewall blocks scanning;<\/li>\n<li>the router settings cannot be changed.<\/li>\n<\/ul>\n<h2>When a Service Center Is Required<\/h2>\n<p>Contact a service center if:<\/p>\n<ul>\n<li>copying without a computer does not work;<\/li>\n<li>the scanning unit does not move;<\/li>\n<li>a support code appears on the screen;<\/li>\n<li>the USB scanner is not detected on several computers;<\/li>\n<li>scanning is interrupted by an unusual noise;<\/li>\n<li>the device was damaged after being dropped;<\/li>\n<li>liquid entered the device;<\/li>\n<li>there is a smell of overheating.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>A Canon TS9500 Series printer may print normally from a Mac, while the scanning component of the multifunction printer does not appear in macOS. The Open Scanner button is missing from Printers &amp; Scanners, the Image Capture app does not&hellip;<\/p>\n<p class=\"more-link-p\"><a class=\"more-link\" href=\"https:\/\/drivernew.com\/?p=78577\">Read more &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-78577","post","type-post","status-publish","format-standard","hentry","category-canon"],"modified_by":"DriverNew","_links":{"self":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=78577"}],"version-history":[{"count":1,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78577\/revisions"}],"predecessor-version":[{"id":78578,"href":"https:\/\/drivernew.com\/index.php?rest_route=\/wp\/v2\/posts\/78577\/revisions\/78578"}],"wp:attachment":[{"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=78577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=78577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drivernew.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=78577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}