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mediumWindowsupdatelearn_purview · Sep 12, 2026

Windows 11 update failure - Microsoft Q&A

Users are experiencing update failures from Windows 11 23H2 to 25H2, encountering error code 0x800700c1. This issue affects both cloud and on-premises environments.

“Windows 11 failed to update from 23H2 to 25H2. Showing Install error - 0x800700c1. This has been happening for the longest time. I tried all suggestions out there including in-place upgrade. How do I fix this issue?”
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Audience
admin
Environment
cloudon_premises
Classification confidence: 95%
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