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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, and it roll back my system.

 

After restart, I attempt to update again and it fail with the same reason. So I proceed to manual update by downloading update from Mic4osoft Update Catalog. The update went fine until I restart my system.

There is an error dialog stated that my system has a problem, windows 11 attempt to repair my system and fail. This make my system unbootable.

 

Microsoft, Windows 11 is getting worst and worst. Updating is a real nightmare. It take forever and 5his time, may be it’s time for me to switch to Mac

 

 

community
device management
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Update management

3 Replies

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

    I have had this recently with a failed Windows KB. The update gets stuck mid process causing the device to boot to Automatic repair. After loads of testing we have found a work around using the following process.

    On Recover screen go into Advanced Options

    Go to Troubleshoot > Advanced Options > Command Prompt

    Type c:

    Run DiskPart

    Run List disk

    Run Select disk 0

    Run list partition

    Run select partion 1 (system)

    Run assign letter=V

    Exit Diskpart

    Run bcdboot c:\windows  /s  V:  /f  UEFI

    Restart Laptop

  • 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!