Security News > 2021 > February > Microsoft pulls a second Windows SSU for blocking security updates
Microsoft has pulled one more buggy Windows 10 servicing stack update, KB4601390, because it blocked customers from installing this month's security and Cumulative Updates.
Windows 10 SSUs provide servicing stack fixes, the component used by Windows 10 to download and install updates correctly.
The removals were caused by Windows 10 security updates getting stuck during the installation process at 24%. The issue was first observed by users who tried installing the February 9 security updates on Windows Server 2016 and Windows 10, version 1607.
"After installing the SSU KB4601390, installation of the Cumulative Update from Windows Update might not progress past 24%," Microsoft said on Wednesday, after acknowledging the issue.
Since Microsoft removed the buggy KB4601390 SSU, it will no longer be offered through the Microsoft Update Catalog or Windows 10 devices searching for updates through Windows Update.
After following the steps outlined above, you should be able to install the latest security updates and the Cumulative Update released on February 9 via Windows Update.
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