Team Foundation Server Trial can be extended in the event that your trial period expires and you are in the process of purchasing ...

Team Foundation Server Trial can be extended in the event that your trial period expires and you are in the process of purchasing a fully licensed version. In order to do this, you must contact Microsoft by following the instructions provided here. You will need to provide the current trial ID listed below and will in turn receive a new trial ID that you can enter in the field at the bottom. This will extend your trial period by 30 days.