Microsoft fixes label printer issues caused by PrintNightmare update

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Microsoft has resolved printer issues caused by the recent PrintNightmare patch. Certain Zebra and Dymo label printers stopped working properly after update KB5004945. The latest update is automatically distributed within 24 hours.

Microsoft released multiple emergency updates to Windows 10 version 2004, 20H2, and 21H1 in the past few days to address vulnerability CVE-2021-34527, better known as the PrintNightmare vulnerability. Updates KB5003690, KB5004760, and KB5004945, among others, were released in quick succession to prevent the remote code execution vulnerability via Windows’ Print Spooler feature. Shortly thereafter, problems appeared when using certain label and receipt printers from at least Zebra and Dymo, Bleeping Computer reports. The solution is distributed via the Known Issue Rollback system, which can take up to 24 hours.

Incidentally, it is still unclear whether the PrintNightmare vulnerability has been fixed with the patch from Microsoft. Several security researchers claim that the exploit is still present via the Point&Print functionality even after the patch has been implemented. In a blog post, Microsoft reassures users; According to the software giant, everything should continue to work properly and the company advises users to install the cumulative update KB5004945 as soon as possible.

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