Maven inconsistencies on Windows buildagents: .m2 repo created on C:\ root

I'm having a long time probleme of library update on Windows buildagent.
Dependencies sometimes don't get updated to the katest snapshot.

While investigating the problem, I realized that the build agent creates a .m2 repository in C:\ instaed of C:\Users\Administrator.

The buildagent also runs under the Administrator user afaiu.

If I start the same build in a command line, the proper .m2 repository is used.

The builds are configured to use the <default> maven instance, $M2_HOME, as the command line. There shouldn't be any difference between the 2 runs.

The depedency snapshot problem could be related.

Any reason why this .m2 repo would be created at the C:\ root?

thanks