Creating TFS Job Agent was not difficult at all but debugging it was a pain in the nick! 🙂
here I explain how to find what the error and how to fix that
Extension not found for TFSJobAgent (ExtensionNotFound)
So first how to know if my job agent succeeded or failed and if it’s failed, why this happen?
How to see this
Open the following link:
Remember you will need to restart the TFS Job Agent every time you deploy a new version of the dll so the service can load the assembly and this the reason for the fail first time.