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    KB5089573 Windows 11 Preview Fails With 0x800f0922—EFI Partition Space Fix

    Microsoft released the May 26, 2026 Windows 11 non-security preview update, KB5089573, for Windows 11 versions 24H2 and 25H2, bringing OS builds 26100.8524 and 26200.8524 while documenting a rollback-prone installation failure tied to cramped EFI System Partitions. That pairing is the real...
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    • efi system partition known issue rollback windows 11 preview windows update error 0x800f0922
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    • Forum: Windows News
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