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Microsoft update KB5005565 breaks printing from macOS to a MS Windows shared printer


tonyx86
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Microsoft pushed update KB5005565 on or around 14 September 2021 to address a security vulnerability.  Unfortunately, this update can break printing from macOS (and from Windows 7 and earlier Windows OSes) to Windows shared printers.  If after 14 September 2021 you have been unable to print from macOS to a Windows shared printer, this might be your fix.

 

  1. On the Windows print server connected to the affected shared printer, confirm that MS update KB5005565 is installed (Control Panel > Programs > Programs and Features > Installed Updates).  If KB5005565 is installed, proceed to Step 2.  If it is not installed, your printing problem is not addressed by this fix.
  2. On the Windows print server connected to the affected shared printer, add the following DWORD32 to the Windows registry: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\RpcAuthnLevelPrivacyEnabled = 0
  3. On the Windows print server connected to the affected shared printer, restart the Print Spooler service
  4. On the macOS client, open System Preferences > Printers & Scanners and delete the affected printer
  5. On the macOS client, re-add the affected printer (Add Printer > Advanced > Type = Windows printer via spoolss ...)

 

You should now be able to print from macOS to your Windows shared printer.  If you still cannot print, try the following

  1. On the Windows print server connected to the affected shared printer, remove MS Update KB5005565.  This is a temporary fix, but if successful, it will confirm that this MS update is causing your printing problem.
  2. On the macOS client, Reset printing system (System Preferences > Printers & Scanners) and then re-add the affected printer.  If you have other printers installed, resetting printing system will delete all printers and you will need to re-add them.
Edited by tonyx86
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  • tonyx86 changed the title to Microsoft update KB5005565 breaks printing from macOS to a MS Windows shared printer
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