In this post, we’ll look at the Wndows Update Error Message “0x80240042 – WU_E_UNKNOWN_SERVICE” that is usually displayed when things go wrong during the update process.
Note that this Windows Update error is application for both Windows 10 and Windows 11.
Error Message
0x80240042 – WU_E_UNKNOWN_SERVICE
Windows Update Error Details
The update service is no longer registered with AU.
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