KB5006670 for Windows 10 is having quite a few issues, some unconfirmed
Microsoft released KB5006670 for the company's Windows 10 operating system last week. The update was released for the three latest versions of Windows 10, versions 21H1, 20H2, and 20H1. Users and administrators who installed the update on machines may have run into several issues, some of which are listed on the official support page on Microsoft's website.
KB5006670 is a cumulative update for Windows 10 that patches security issues on systems it is installed on. It is an important security update, but the installation may cause issues on devices that it is installed on. Many issues affect printing on devices the update was installed on.
Microsoft lists just one known issue on the support page: installation of printers using Internet Printing Protocol may not complete successfully. When you double-check the Windows 10 Release Health site, you will notice that additional issues are listed, some of which affect printing.
Here is the list of known issues related to printing.
- Custom printing properties might not be correctly provided to print server clients
- Installation of printers might fail when attempted over some network connections
- Installation of printers via Internet Printing Protocol (IPP) might not succeed
- Receiving a prompt for administrative credentials every time you attempt to print
Most issues look as if they may not affect Home devices running Windows 10 much. Users are reporting however that network printing is not working correctly, and that they receive errors such as "0x00000709" or "Element not found".
The issues appear to be related to Microsoft's ongoing attempts to deal with printing related vulnerabilities that are commonly known as PrintNightmare. The issues are exploited actively and common solutions, such as uninstalling the KB5006670, will make the system vulnerable again to these attacks.
Bleeping Computer has published a number of suggestions that administrators may follow to resolve the issue.
It is unclear when a patch will be released by Microsoft that addresses the issues that users experience currently. Microsoft has not even acknowledged the network printing issue.
Printing issues are not the only issues that Microsoft confirmed officially for KB5006670.
The release health page lists the following additional known issues:
- Smartcard authentication might fail when attempting to connect using Remote Desktop
- Apps might fail to open, close unexpectedly or become unresponsive
Most issues are listed as resolved by Microsoft. Still, printing is still bugged for some users of the latest version of Windows 10, and likely also other versions of Windows 10.
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