In Visual Studio 2019, we have been using the GitHub extension successfully since before release. Now, all of the sudden, when we push, pull, or sync, we receive the following in the Output window:
Warning: 'C:\ProgramData/Git/config' has a dubious owner: '(unknown)'.
For security reasons, it is therefore ignored.
To fix this, please transfer ownership to an admininstrator.
You should check if 'C:\ProgramData/Git/config' actually exists. If it doesn't you can just create it and paste the following into the file:
[core]
symlinks = false
autocrlf = true
fscache = true
[color]
diff = auto
status = auto
branch = auto
interactive = true
[help]
format = html
[rebase]
autosquash = true
This worked for me.
Delete or rename the existing file at that location is also an option. It looks like it's parts of some lower level windows (or MSYS2/Cygwin) security that's brought in via libgit.lib.
Why the created file has the wrong owner is not yet known.
Who/what is the owner for that existing file? What language is in use?
It's been noted as an issue at https://github.com/git-for-windows/git/issues/2304 but isn't resolved yet.
We ran into this exact issue after upgrading Git to version 2.23.0.windows.1 on our build agents.
The fix that worked for us was to change the owner of C:\ProgramData/Git/config to Administrators. Note that this is different to the Administrator user!
To do this, right-click on C:\ProgramData/Git/config and select Properties then the Security tab.
And click Advanced...
Use the Change link to set the owner to Administrators.
Delete the file config file from C:\ProgramData/Git directory and try again.
Uninstall Git and install a downgraded version. The version that shows this problem is the 2.23.0. Downgrade it to the 2.22.0 and it works fine without this problem.
Git releases: All git releases Git 2.22.0: Version without this issue
来源：https://stackoverflow.com/questions/57592530/latest-update-brings-github-error-on-pull-push-or-sync