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Trying to install "Windows 11 Insider Preview 10.0.26120.3073 (ge_release_upr)", fails due to free space

Anonymous
2025-02-01T04:12:48+00:00

I'm trying to install "Windows 11 Insider Preview 10.0.26120.3073 (ge_release_upr)" on a pc with 10 GB free on the C: drive, 117 GB free on USB E: drive, and 902 GB free on local D:.

The process notifies that there is not enough room, and leads me through disk cleanup. I deleted everything possible on C:. The process notes the other drives available to be used for space, but will not progress past the demand to free up space on C:.

I've already moved the TMP and TEMP folders from the default C: location to the D: drive, and still get the same error.

Any ideas to get this package installed?

Windows Insider program | Windows Insider preview | Install, activate, and Windows update

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  1. Anonymous
    2025-02-08T16:46:26+00:00

    It appears that EVERY January Microsoft rolls out a bad/corrupted update.

    Last year, it was the recovery partition bug, which I didn't solve until September (requiring an upgrade/reinstall in place of Windows 10).

    This year, I cannot get the Preview to install; fully corrupting a lightly used (2-3 hours a month) Dell XPS 13 (9310).

    I have nearly 800GB of free space and 32GB of RAM; both are ample for a quick upgrade.

    But it keeps failing and resetting.

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  2. Anonymous
    2025-02-03T16:04:32+00:00

    Thanks Ramesh!

    I deleted all of the files at that location and retried the update and it is now progressing.

    (P.S. I found this tutorial after your post: https://support.microsoft.com/en-us/topic/-we-couldn-t-update-system-reserved-partition-error-installing-windows-10-46865f3f-37bb-4c51-c69f-07271b6672ac that had the steps you mentioned, just for others who land on this page.)

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  3. Ramesh 176.1K Reputation points Volunteer Moderator
    2025-02-03T14:14:46+00:00

    Disk Management won't report the free space correctly for the EFI and the WinRE partitions.

    Please open an admin Command Prompt window (instead of PowerShell) and run these commands one by one:

    mountvol Y: /s

    cd /d Y:\EFI\Microsoft\Boot\Fonts

    del *.ttf

    powershell -command "GCI Y:\  -File -Recurse | Sort Length -descending | Select FullName, Length -first 10"

    dir Y:\

    Post the output here.

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  4. Ramesh 176.1K Reputation points Volunteer Moderator
    2025-02-03T16:13:45+00:00

    Hi Taylor,

    Glad that helped. On some systems, deleting the .ttf files is not sufficient because the BIOS update images consume most of the disk space in that partition. For example: https://answers.microsoft.com/en-us/windows/forum/windows_11-wintop_update/windows-update-failing-0xc1900201/fbc65ff2-c891-47c0-9056-6b92f90512ed?messageId=9f460b4c-364b-4b94-b496-b91fb845eccd

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  5. Anonymous
    2025-02-03T14:05:33+00:00

    I think I am having a related issue, but I am receiving a different error during install: "This PC doesn't currently meet Windows 11 system requirements Here's Why: We couldn't update the system reserved partition."

    Here's the information about my C: Drive and the error message.

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