Microsoft has showed that the Might 2026 Home windows 11 safety replace (KB5089549) fails to put in on some techniques and triggers 0x800f0922 mistakes.
This identified factor is brought about by means of inadequate unfastened house at the EFI Gadget Partition (ESP), which leads to the replace mechanically rolling again on affected units.
“This factor impacts units with restricted unfastened house at the EFI Gadget Partition (ESP), particularly when the tool has 10 MB or much less house to be had,” Microsoft mentioned.
“On affected units, the set up may continue in the course of the preliminary stages however fail throughout the reboot section at roughly 35–36% crowning glory.”
Customers impacted by means of those set up issues additionally see the “One thing did not cross as deliberate. Undoing adjustments.” message when the set up rolls again, and would possibly to find log entries pointing to inadequate ESP unfastened house, corresponding to:
- “SpaceCheck: Inadequate unfastened house”
- “ServicingBootFiles failed. Error = 0x70”
- “SpaceCheck:
utilized by third-party/OEM information out of doors of Microsoft boot directories”
Whilst Microsoft remains to be operating to unravel this factor, it steered affected shoppers to mitigate it the usage of the Identified Factor Rollback (a Home windows characteristic that reverses buggy updates driven by way of Home windows Replace).
In enterprise-managed environments the place IT departments regulate Home windows updates, admins can manually mitigate it by means of putting in and configuring this Team Coverage.
“It is important to set up and configure the Team Coverage on your model of Home windows to unravel this factor,” Microsoft mentioned. “You’ll additionally wish to restart your tool(s) to use the crowd coverage environment. Notice that the Team Coverage will briefly disable the exchange inflicting this factor.”
You’ll be able to to find additional steering on deploying and configuring Identified Factor Rollback staff insurance policies on Microsoft’s give a boost to site.
Microsoft launched the KB5089549 cumulative replace remaining week, together with dozens of different worm fixes, safety patches, and enhancements, together with a repair for any other identified factor that reasons some Home windows 11 techniques in addition into BitLocker restoration after putting in the April 2026 Home windows safety updates.
Previous this month, Microsoft additionally addressed a Home windows Autopatch worm that brought about driving force updates limited by means of administrative insurance policies to be deployed on some Autopatch-managed Home windows units around the Ecu Union, and showed that the April 2026 safety updates had been inflicting disasters in third-party backup packages the usage of a inclined driving force.
Automatic pentesting gear ship actual worth, however they had been constructed to respond to one query: can an attacker transfer in the course of the community? They weren’t constructed to check whether or not your controls block threats, your detection laws hearth, or your cloud configs cling.
This information covers the 6 surfaces you if truth be told wish to validate.
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