Azure DevOps pipelines are experiencing issues and we can't trigger jobs against our self hosted agents currently, previously they did. I assume what ever is occurring here is more control plane related than host specific.
Dozens of HTTP 500s and so forth each week. I have built us quite a large library of actions with transient retry due to this. I'm out of options for the remaining daily failures, so the "automatic retry failed actions" sledgehammer is up next.
Keep the f$!# away from it. I have suggested moving away from GH entirely, but my peers aren't too keen on migrating to a different CI system yet again.