When attempting to login to Team Foundation Server 2010 using SSL option with Toad 11.6.1 and earlier, the following message appears when trying to connect:
'TFS Server Name is not assigned. Modify TFS configuration settings to correct'
However, the connection parameters within Toad are all set ok.
In Toad when the SSL option is ticked, the connection url stays as http://....
When you put Toad's connection URL in a browser, it doesn't connect, but when it is changed to https://.....  it works ok.
This issue is resolved in Toad v12.
This can be downloaded from: here