Received a question today from somebody trying to upgrade their Team Foundation Server 2005 from trial to the full version.  In this case they are trying to use their volume license.  Included below is the table for upgrading Team Foundation Server (TFS) 2005 trial and Team Foundation Server work group edition (wge) to full versions both for volume licensed (vl) and full packaged product retail(FPP)

 

User Has Installed

If they Purchased via VL

If they Purchased via FPP

TFS 180 Trial

Call PSS for Product Key,

No Un/Reinstall required

Enter FPP Product Key

No Un/Re-Install required

TFS WGE

Call PSS for Product Key,

No Un/Reinstall required

N/A - No FPP available

VSTS Trial

Un/Re-install Required,

Keys N/A

Enter FPP Product Key

No Un/Re-Install required

VS Pro Trial

Un/Re-install Required,

Keys N/A

Enter FPP Product Key

No Un/Re-Install required

Note: if you are trying to upgrade Team Foundation Server 2008 make sure and check out Brian Harry's blog post on this topic:  How do I upgrade to TFS 2008?

Brian Keller also has a whitepaper on this topic due out any time now!