Microsoft addressed a critical upgrade bug impacting migrations from Windows 10 to Windows 11 and Server upgrades, alongside various issues from the August Update. Users experienced installation errors, data corruption, and problems with Event Viewer logs. Recovery options for older Windows versions also faced crashes. Time is limited for Windows 10 users to upgrade before support ends on October 14, but the bug caused widespread error 0x8007007F during upgrades. Microsoft confirmed a fix was available on August 15 but took three days to announce it. Notably, newer Windows versions were unaffected, emphasizing reliability.
Microsoft has resolved a critical upgrade bug that affected Windows 10-to-11 migrations and Server upgrades, causing various installation errors and complications since August.
The upgrade bug contributed to installation errors, data corruption, and faulty Event Viewer logs, significantly hampering the upgrade experience for many users.
Microsoft confirmed that the fix for the issues was available on August 15, but they communicated the resolution to users three days later.
Windows 11 version 24H2 and Windows Server 2025 were not affected by these upgrade issues, reinforcing Microsoft's position on reliability for its latest OS.
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