we are in the middle of a process of upgrading our TFS-server from 2010 to 2013. Microsoft has been looking at it for 2 months and has not come up with anything. And they are still working on it they say.
But time is flying and nothing is happening.
We have 3 collections with projects. 2 collections are from 2005 and they upgrade without any problem. It is the 2010-projects which fails during the upgrade-wizard-run. Returning "Error 0" in the log.
For sure there must be something with the 2010 projects which stops the upgrade, but what?