When upgrading TFS, the existing Team Projects won’t automatically adopt the new features of the new TFS version. Some of the new features might require some updates to the Team Project. Note that this will only be required for TFS Team Projects … VSTS Team Projects are automatically updated with each service upgrade.
You can perform this update yourself via the Configure Features wizard. If the Configure Features link is visible for your Team Project, it means that the Team Project requires an update. Otherwise, the new features are already enabled.
This might work if you don’t have a lot of Team Project Collections and Team Projects. During a recent upgrade to TFS 2017 Update 1 at a customer, I was confronted with 31 Team Project Collections and in total a bit more than 400 Team Projects. No way I was going to hit the configure features link 400 times …
I remember having done this already programmatically in the past (https://www.visualstudio.com/en-us/docs/work/customize/configure-features-after-upgrade#program-updates), but the issue now was that there wasn’t a ready-to-use solution for TFS 2017 Update 1. So, I used some tips & tricks from https://www.visualstudio.com/en-us/docs/work/customize/configure-features-after-upgrade#program-updates and also the Features4tfs CodePlex solution was a good starting point. I wanted to have a scenario where it’s possible to scan a complete TFS 2017 environment with all on-line Team Project Collections and all available Team Projects.
As a result, you can find my solution in Github: https://github.com/pietergheysens/TFSUpgradeTeamProjectFeatures. Because it worked for me with TFS 2017 (Update 1), it doesn’t mean it will work for you. Please test it first during a trial-upgrade and see if it helps you to upgrade your Team Projects in one go.