In this post, we’ll look at the Wndows Update Error Message “0x80243001 – WU_E_INSTALLATION_RESULTS_UNKNOWN_VERSION 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
0x80243001 – WU_E_INSTALLATION_RESULTS_UNKNOWN_VERSION
Windows Update Error Details
The results of download and installation could not be read from the registry due to an unrecognized data format version.