Updgrade to 2.5.7 - File does not contain a valid CIL image.

[milkshakeuk]

Windows Version

Microsoft Windows [Version 10.0.26100.4061]

WSL Version

2.5.7

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

No response

Distro Version

Ubuntu 24.04.2 LTS

Other Software

git version 2.49.0
vscode 1.100.2 (user)

Repro Steps

git clone repository.git

Cloning into 'repository'...
Cannot open assembly '/mnt/c/WINDOWS/System32/OpenSSH//ssh.exe': File does not contain a valid CIL image.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

code .

Cannot open assembly '/mnt/c/Users/JakeAitchison/AppData/Local/Programs/Microsoft VS Code/Code.exe': File does not contain a valid CIL image.

Expected Behavior

git clones the repo

vscode launches remote wsl instance

Actual Behavior

see repro steps

Diagnostic Logs

WslLogs-2025-05-29_09-58-53.zip

[github-actions]

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Invoke-WebRequest -UseBasicParsing "https://raw.githubusercontent.com/microsoft/WSL/master/diagnostics/collect-wsl-logs.ps1" -OutFile collect-wsl-logs.ps1
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[github-actions]

Diagnostic information

Detected appx version: 2.5.7.0

[github-actions]

Diagnostic information

Issue was edited and new log file was found: https://github.com/user-attachments/files/20501689/WslLogs-2025-05-29_09-58-53.zip
Detected appx version: 2.5.7.0

[sirredbeard]

Hi @milkshakeuk!

How did you install git?

Are you running these commands in your WSL shell or PowerShell?

File does not contain a valid CIL image. I would expect to see this error for a .NET application if the .NET path is misconfigured, but not git, which is not a .NET application. Same with code.

Are you running these in your WSL shell and do you have .NET or Mono installed in your WSL image?

[milkshakeuk]

hi @sirredbeard,

git is installed within WSL it's not using the windows git installation; however it is using 1password to get the repo ssh key and gpg signing key.

https://developer.1password.com/docs/ssh/get-started#step-4-configure-your-ssh-or-git-client

relevant git config section:

[gpg "ssh"]
  program = "/mnt/c/Users/JakeAitchison/AppData/Local/1Password/app/8/op-ssh-sign-wsl"

I found some useful info here.

Using the followingg command I have worked around the problem sudo update-binfmts --disable cli though this was never an issue before updating so I suspect some systemd binfmts related shenanigans happens during the wsl update...maybe?

ls /proc/sys/fs/binfmt_misc

WSLInterop  python3.12  register  status

update-binfmts --display

cli (disabled):
     package = mono-runtime
        type = magic
      offset = 0
       magic = MZ
        mask = 
 interpreter = /usr/bin/cli
    detector = /usr/lib/cli/binfmt-detector-cli
python3.12 (enabled):
     package = python3.12
        type = magic
      offset = 0
       magic = \xcb\x0d\x0d\x0a
        mask = 
 interpreter = /usr/bin/python3.12
    detector = 

[sirredbeard]

With more context, a binfmts issue makes sense here.

I had same suspicion about .NET or Mono misconfiguration as raised in #9146.

I don't think using your 1Password GPG key is an issue.

What is odd is that WSL 2.5.1 contained a fix for a related issue, #8843.

It even seems to have bled over into systemd issues.

[OneBlue]

Thank you for reporting this @milkshakeuk. This is most likely caused by a regression in 2.5.7. This will be fixed in the next release.

See #12999

[milkshakeuk]

@sirredbeard @OneBlue btw I must run sudo update-binfmts --disable cli each day i.e. wsl fresh start to enable things to work again.

[OneBlue]

Fixed in 2.5.8