If you want to completely remove Lab Management configuration from your TFS instance, you probably know TfsConfig lab /Delete command, used to remove association between one Project Collection and SCVMM. The reasons behind the need to completely remove Lab Management configuration could be various, one of the most common is: you created a cloned copy of your TFS environment for testing purpose, and you want to be 100% sure that your cloned instance does not contact SCVMM, or you can simply have multiple Test TFS Instance and you need to move lab management from one instance to another.
Figure 1: PreviewCollection has Lab Management configured.
In the above picture you can see that my PreviewCollection has Lab Management feature enabled, so I can simply run the command TfsConfig lab /Delete /CollectionName:PreviewCollection to remove this association.
Figure 2: TfsConfig command in action.
When command completes you can verify that the collection has not Lab Management feature enabled anymore.
Figure 3: PreviewCollection now has Lab Management feature disabled.
After running that command for all your Lab Management enabled Team Project Collections you can be disappointed because you still see SCVMM host configured in TFS Console.
Figure 4: Even if none of the team projection collection is configure, SCVMM host is still listed.
This is usually not a big problem, but if you want to be 100% sure that your TFS installation does not maintain any connection to the SCVMM instance used to manage your Lab, you can use a simple PowerShell script you can find on this Blog Post. That post is related to TFS 2010, but the script it is still valid for newer TFS releases. To write this blog post I’ve used a TFS 2015 instance and everything went good.
In that post you have an alternative solution of directly updating Tfs_Configuration database, but I strongly discourage you to use that solution because you can end with a broken installation. Never manipulate Tfs databases directly.
Figure 5: Lab Management is completely removed from your TFS instance.
Now lab management configuration is completely removed from your TFS instance.