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Firefox print dialog shows "Printer not available" even though Windows detects my Brother DCP-T720DW

Firefox 列印
Adharv Das
Adharv Das

I recently started to have a printing problem in Firefox on Windows 11. My Brother DCP-T720DW works fine with other applications like Word and Notepad, but when I try to print from Firefox, sometimes I get a "Printer not available" message or the print dialog incorrectly shows the printer. For troubleshooting, I uninstalled and then reinstalled the printer driver following the official Brother download page: https://support.brother.com/g/b/downloadtop.aspx?c=us_ot&lang=en&prod=dcpt720dw_all Since that didn't fix the issue, I also downloaded and reinstalled the driver from: https://printerdrivers.com/brother-dcp-t720dw-driver/ Windows detects the printer and is able to print test pages, so it looks like the problem is only with Firefox. Here are the things I have tried: Restarting both Firefox and Windows Uninstalling and reinstalling the printer Resetting Firefox settings Running Firefox in Troubleshoot Mode Making Brother printer the default one

Has anyone else had the same issue in which Firefox refuses to detect a printer that works correctly in other applications? Is there a print setting or preference in Firefox that might cause this? Thanks in advance for any advice.

I recently started to have a printing problem in Firefox on Windows 11. My Brother DCP-T720DW works fine with other applications like Word and Notepad, but when I try to print from Firefox, sometimes I get a "Printer not available" message or the print dialog incorrectly shows the printer. For troubleshooting, I uninstalled and then reinstalled the printer driver following the official Brother download page: https://support.brother.com/g/b/downloadtop.aspx?c=us_ot&lang=en&prod=dcpt720dw_all Since that didn't fix the issue, I also downloaded and reinstalled the driver from: https://printerdrivers.com/brother-dcp-t720dw-driver/ Windows detects the printer and is able to print test pages, so it looks like the problem is only with Firefox. Here are the things I have tried: Restarting both Firefox and Windows Uninstalling and reinstalling the printer Resetting Firefox settings Running Firefox in Troubleshoot Mode Making Brother printer the default one Has anyone else had the same issue in which Firefox refuses to detect a printer that works correctly in other applications? Is there a print setting or preference in Firefox that might cause this? Thanks in advance for any advice.

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