Windows 11 and Windows 10 may be problematic with April Cumulative Updates. The KB5012592 and KB5012599 packages are in some cases troublesome at the stage of installing these patches.
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The faults are described by the service Windows Latest. According to reports from Windows 11 users on the official forum and reddit, in the case of the KB5012592 package, the installation problem usually results error 0x800f081f, 0xc1900101 or 0x800f0988. The lack of details makes diagnostics difficult, but practice shows that the reason may be an unstable Internet connection and, as a result, the lack of compliance Windows Update requirements.
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In Windows 10, and therefore with KB5012599, the vulnerability is also related to the installation stage of but shows up with error 0x800f0831. In practice, the installer gets stuck at the 20 percent stage. installation, then jumps to 100%, but the process does not end with a successful installation. In this case, it is not known how to deal with the defect and it remains to wait for a solution from Microsoft. However, manual installation from the Microsoft Update catalog can be a rescue.
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