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You may lose system certificates after Patch Tuesday updates

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Published onNovember 10, 2020

published onNovember 10, 2020

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Key notes

The release of this month’sPatch Tuesdayupdates is of major interest to Windows 10 v2004, Windows 10 1909, and 1903 users.

Simply put, it fixes issues identified in the software program you run on a regular basis and brings major security improvements.

Unlike regular updates that rarely demand much attention,Patch Tuesdayupdates involve a much bigger process.

In spite of that, certain issues do arise. System and user certificates might be lost when users update their PC from Windows 10, version 1809 or later to a later version of Windows 10.

October Patch Tuesday may cause system certificate issues

October Patch Tuesday may cause system certificate issues

Microsoft has recently distributed a new cumulative update KB4586781 to its users via Windows Update and WSUS.

This non-security patch increases the build numbers of version 2004 to 19041.630 and version 20H2 to 19042.630.

According to theofficial Microsoft changelogregarding the KB4586781 cumulative updates, it seems that they may lead to problems related to system and user certificates:

Devices will only be impacted if they have already installed any Latest cumulative update (LCU) released September 16, 2020 or later and then proceed to update to a later version of Windows 10 from media or an installation source which does not have an LCU released October 13, 2020 or later integrated.

This primarily happens when managed devices are updated using outdated bundles or media through an update management tool such as Windows Server Update Services (WSUS) or Microsoft Endpoint Configuration Manager.

Things are no different for KB4586786 cumulative updates (OS builds 18362.1198 and 18363.1198). If you are also bothered by this issue, feel free to mitigate it within the uninstall window by going back to your previous version of Windows.

That covers our topic for today. If you need a summary of the November Patch Tuesday, we have written thisdedicated articlethat includes the download links that you can use to get the updates right away.

The nextPatch Tuesdayfalls on December 8, so rest assured that we’ll return with new details. Until then, enjoy your patching and make sure to keep yourPCsafe from the latest threats.

Moreover, don’t hesitate to let us know whether or not you intend to apply the cumulative updates immediately. Do so by using the comments area below.

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More about the topics:patch tuesday,windows 10 updates

Vlad Turiceanu

Windows Editor

Passionate about technology,Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world.

Coming from a solid background in PC building and software development, with a complete expertise in touch-based devices, he is constantly keeping an eye out for the latest and greatest!

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Vlad Turiceanu

Windows Editor

Coming from a solid background in PC building and software development, he’s a Windows 11 Privacy & Security expert.