git Difftool command doesn't work

[smaillet-ms]

• I was not able to find an open
  or closed issue matching
  what I'm seeing, including in the git-for-windows/git tracker.

Setup

• Which version of microsoft/git are you using? Is it 32-bit or 64-bit?

$ git --version --build-options

git version 2.38.1.windows.1
cpu: x86_64
built from commit: b85c8f604d375d4d773a36842964e8a7ec056aae
sizeof-long: 4
sizeof-size_t: 8
shell-path: /bin/sh
feature: fsmonitor--daemon

Are you using Scalar or VFS for Git?

Yes, GVFS

If VFS for Git, then what version?

$ gvfs version

GVFS 1.0.21229.1

• Which version of Windows are you running? Vista, 7, 8, 10? Is it 32-bit or 64-bit?

$ cmd.exe /c ver

Microsoft Windows [Version 10.0.22621.963]

• Any other interesting things about your environment that might be related
  to the issue you're seeing?

Everything else appears to work fine.

Details

• Which terminal/shell are you running Git from? e.g Bash/CMD/PowerShell/other

PowerShell

• What commands did you run to trigger this issue? If you can provide a
  Minimal, Complete, and Verifiable example
  this will help us understand the issue.

 git difftool --dir-diff

• What did you expect to occur after running these commands?

Expected it to launch my directory diff tool as it has in the past (Haven't needed to use this command in a while)

• What actually happened instead?

git: 'difftool--helper' is not a git command. See 'git --help'.
warning: failed: 1

• If the problem was occurring with a specific repository, can you specify
  the repository?

  • Public repo: insert URL here
  • Windows monorepo
  • Office monorepo
  • Other Microsoft-internal repo:
  • Other internal repo.
    (Also occurs on any local machine repos as well so not repo specific)

[dscho]

git: 'difftool--helper' is not a git command. See 'git --help'.

That is a strange error that I have not seen before.

Can you see whether the file C:\Program Files\Git\mingw64\libexec\git-core\git-difftool--helper exists in your setup? (For me, it exists and has 2503 bytes of file content.)