Microsoft has released a fix for a bug introduced with the June 2020 fix. It blocked all print jobs on certain printers.
The out-of-band update should correct the problem with Ricoh, Canon, Panasonic, and Brother printers, which many Windows 10 administrators say stopped working after installing the security update.
To resolve the problem, some were forced to uninstall the June security update. Microsoft’s new update should therefore allow affected organizations and users to reinstall the security updates. It was one of the largest tuesday patches ever released by Microsoft.
Microsoft provides details of the fix for the printer issue on its Windows 10 Message Center page. A fix is available for versions of Windows 10 1803 to 1909 and the corresponding version of Windows Server.
A patch for the other affected versions of Windows will be released in the coming days, according to Microsoft. These include the latest feature release, Windows 10, version 2004, as well as versions 1709, 1607, Windows 10 Enterprise LTSC 2015 and Windows 8.1. Windows Server version 1709, Windows Server 2012 R2 and Windows Server 2012.
The update is not installed automatically via Windows Update or WSUS, so users with the affected printers will need to install it manually from the Microsoft Update catalog.
“An optional out-of-band update is now available from the Microsoft Update catalog to resolve a known issue where some printers may not be able to print after installing the updates released on June 9, 2020,” said Microsoft.
“We recommend that you install only this optional update if you are affected by this issue. For more information, see the Known Issues section for your version of Windows 10 or see the links below.”
Update KB4567512 fixes the printer bug in Windows 10 1903 and 1909, while KB4567513 fixes it in version 1809 and KB4567514 fixes it in version 1803.
As Microsoft explains, the update containing the bug caused the print spoolers to close when trying to print, preventing printers from printing. This also affected printing in PDF format.
In addition, Microsoft confirmed last week another bug affecting printers connected by USB, which removes the printer ports, preventing any task that rests on this port. Microsoft has offered a workaround for this problem and will provide a fix in a future Windows update.