Windows 10 September updates break printing for some users

Windows 10 new printing bug

On Tuesday, Microsoft published cumulative updates for all
supported versions of Windows 10 and it wasn’t long before
users started flagging new issues. On our forum and social
media, users have claimed that they’re unable to use printers
after applying the cumulative updates while others have
reported installation issues.

The cumulative updates –
KB5005565 and KB5005566 – are affected. After applying the
latest cumulative updates, users are reporting problems when
using the network-based printers.

They can no longer print documents using the network printers,
but the printers start working again when they
manually uninstall the cumulative update using Settings or
Command Prompt.

“Even from domain admin logged into a workstation, I still
could not print to the shared printers on the server. One
printer went through the motions as it would print, but nothing
came out. The second one flat out crashed explorer.exe when you
tried to print. Uninstalling the Sept security update from the
server for the moment,” a user wrote.

“This update destroyed all of printer sharing for hundreds of
offices around the US,” another user told us.

This cumulative apparently addresses the remaining
PrintNightmare known as CVE-2021-36958. Windows PrintNightmware
is a remote code execution vulnerability that exists in the
Windows Print Spooler service and it affects the printing
operations of the operating system.

Attackers can get administrative access to the machine if
they’re able to successfully exploit the bug. It’s important to
note that these cumulative updates are necessary to protect
your devices, but if you’re unable to use the printing service,
you can temporarily uninstall the patch.

Other bugs in September update

In addition to printing problems, we’ve also seen reports of
Windows Update installation issues. If you’re unable to install
the update, you can try the offline installer from the
Microsoft Update Catalog.

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