Security News > 2021 > September > New Windows security updates break network printing

Windows administrators report wide-scale network printing problems after installing this week's September 2021 Patch Tuesday security updates.

Many Windows system administrators are now reporting [1, 2] that their computers can no longer print to network printers after installing the PrintNightmare fixes on their print servers.

In conversations with multiple Windows admins dealing with these issues, they all told BleepingComputer that the updates are breaking their network printing, and they can only fix them by removing the updates.

"After yesterday's Windows Update, none of the network computers can print to Windows 10 computer we use as a print server," another admin told BleepingComputer.

Once Microsoft made these changes, Windows users began receiving errors when trying to print, or Windows would prompt for an administrative password to update printer drivers.

According to security researcher Benjamin Delpy, this week's PrintNightmare fix also introduced new changes that automatically block the CopyFiles directive print driver feature.

News URL

https://www.bleepingcomputer.com/news/security/new-windows-security-updates-break-network-printing/