Windows Version

Microsoft Windows [Version 10.0.26100.3194]

WSL Version

2.4.11.0

Are you using WSL 1 or WSL 2?

• WSL 2
• WSL 1

Kernel Version

5.15.167.4-microsoft-standard-WSL2

Distro Version

Ubuntu 24.04.2 LTS

Other Software

No response

Repro Steps

Try to use ssh-keygen w/o passphrase.

Run:

wsl --exec ssh-keygen -t ed25519 -q -N "" -C user -f /tmp/user

Error:

The parameter is incorrect.
Error code: Wsl/Service/E_INVALIDARG

Originally this was discovered running the command programmatically spawning child process passing empty string as one of the args.

Expected Behavior

Using shell works as expected

wsl ssh-keygen -t ed25519 -q -N "" -C user -f /tmp/user

Output:

/tmp/user already exists.
Overwrite (y/n)? n

Actual Behavior

Error:

The parameter is incorrect.
Error code: Wsl/Service/E_INVALIDARG

Diagnostic Logs

No response