Windows 11 All 22H2 Builds explorer.exe Previous Versions / Shadowcopy broken for local drives, NtFsControlFile failed error 1450 ntdll.dll/kernel32.dll

Question

First noticed with 22621.105, and then tested with all builds up to 22621.436: Explorer "Previous Versions" tab shows no previous versions for local drives:

But when checking with vssadmin I see that those shadowcopys are there ! They are just inaccessible.

Using my own tool from https://github.com/Joachim-Otahal/Windows-ShadowCopy I can see which exact call failed, it is NtFsControlFile with Error 1450. This is the same call explorer.exe uses.

Can this be checked please?

I reported each time to insider feedback:

The feedback hub links are (chronological):

https://aka.ms/AAhhfuw 22621.105 where I first noticed the problem
https://aka.ms/AAhh88j 22621.160
https://aka.ms/AAhhlr7 22621.169
https://aka.ms/AAhhlr5 22621.290
https://aka.ms/AAhiia4 22621.436

I reported to https://answers.microsoft.com/en-us/insider/forum/all/windows-11-22621-shadowcopy-previous-versions/3df7b9e4-2aca-4ac1-85b3-0fd9a631781f and so on, until I finally got redirected to this place here. I hope someone ar Microsoft finally notices the problem and fixes it with the next update, or at least before it is rolled out to public.

I will switch back to 22000.795 now, 'cause I rely HEAVILY on ShadowCopy on top of my regular normal backups.

kind regards,

Joachim Otahal

Answer 1

Windows 11 23h2, Build 22631.3447 aka cumulative update April 2024, finally fixed in the official version of Windows 11.

Many thanks to Philipp Kuhn at Microsoft to see my constant complaining, to reproduce it, make it an official bug entry and pushing to get the fix done !