I have been using Windows 10's Windows Subsystem for Linux bash (Ubuntu via Microsoft Store) in the last few weeks, no problem, awesome feature, couldn't be happier.

But today it suddenly stopped working. Typing bash just does nothing on the command line (cmd and PowerShell), as if it would be waiting for something. It doesn't crash or output an error message, but just keeps showing a blinking cursor.

(Cursor not visible on screenshot, it is a blinking _ on the next line after bash)

Task manager shows both command lines at 0% CPU with a "Microsoft Bash Launcher" process also at 0% CPU:

Any idea how to debug and fix this?

I have been using Windows 10's Windows Subsystem for Linux bash (Ubuntu via Microsoft Store) in the last few weeks, no problem, awesome feature, couldn't be happier.

But today it suddenly stopped working. Typing bash just does nothing on the command line (cmd and PowerShell), as if it would be waiting for something. It doesn't crash or output an error message, but just keeps showing a blinking cursor.

(Cursor not visible on screenshot, it is a blinking _ on the next line after bash)

Task manager shows both command lines at 0% CPU with a "Microsoft Bash Launcher" process also at 0% CPU:

Any idea how to debug and fix this?

Update: After a few manual restarts and one "crash" (I think explorer.exe stopped, and didn't really come back after killing the process after a prompt) it now works again for now.
I had the problem a few weeks before (where I fixed it be reinstalling WSL), so I assume it will reappear sooner or later.