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tsanchai's avatar
tsanchai
Copper Contributor
May 13, 2026

May 2026 KB5089549 make my system unbootable

  Today, I have updated my HP Elite X2 G4 with May 2026 Tuesday update KB5089549 and several other updates.   The update fail, when restarted, an error dialog read Thing does not go as expected, a...
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tsanchai's avatar
tsanchai
Copper Contributor
May 13, 2026

aftwer wasting my time to solve this issue, I have to restore my Windows 11 systm from my backup made a week ago.

 

AFter very extensivw search, I try to free up sapce on System reserved Partition. This is made by delete Fonts files, and SystemDiags files to free up spce

 

Then I try to do the update again. And it work.

 

Thank Microsoft for maing this update without realizing that filled up System Partition will kill everything. WEhy dont you aware and fix this before habd?

 

SO disappoint with Microsoft

  • GJW's avatar
    GJW
    Occasional Reader
    May 13, 2026

    Thanks for posting this.

     

    I had the same problem. I used diskpart to assign a drive letter to the System Reserved Partition and it only had 6 Mb available. Just like you, I removed the Fonts files (in Windows 11, they are in directory EFI\Microsoft\Boot\Fonts) and .bin firmware files from HP (in directory EFI\HP\DEVFW). After this, the update completed successfully. 

    Thanks again for this very usefull suggestion!