Self hosted runner unable to connect after timeout

[jd565]

Describe the bug
We have a self hosted runner that was working and picking up jobs, and after some network issues stopped running with the message Runner connect error: The actions runner ... already has an active session.. Retrying until reconnected.

To Reproduce
No precise steps, but we had this issue, completely uninstalled and reinstalled the runner, had it working for a few days and then this problem happened again

Expected behavior
Runner manages to connect and pick up jobs again.

Runner Version and Platform

Version of your runner? 2.321.0

OS of the machine running the runner? OSX Darwin 24.0.0

What's not working?

Runner cannot connect and says the runner already has an active session. Even waiting days the runner still has this error message. I've checked other threads and looked for processes related to github actions runner but can't find any running on the machine.

Runner and Worker's Diagnostic Logs

At the end of the first log file there are some timeouts when making network requests, then the second log file shows it failing saying there is already an active session, after which there are no log files until 4 days later when we started the runner again and it failed with the same issue.

Runner_20250124-102145-utc.log
Runner_20250124-130949-utc.log
Runner_20250128-123134-utc.log