TeamCity 6.0 troubles, VCS root, TFS via HTTPS, Invalid certificate

Hi, I have an error about invalid certicate when trying to connect TFS Server.

ERROR - The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
System.Exception: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure.

Environment Configuration:

TC Server: TC v.6.0 (build 15772) installed, MSVS2010 & Team Explorer 2010 not installed, server in domain, for example: tcdomain, local network.


TC Agent: TC Agent, MSVS2010 SP1 & TeamExplorer 2010 installed, client machine in same domain: tcdomain and network., agent running with tcdomain\user1 account.

TFS Server: TFS 2010 SP1 installed, setting up connection via ssl channel, server in another domain (for example: tfsdomain) and located in WWW (tfsdomain.com), user: tfsdomain/user2. path to collection: https://srv.tfsdomain.com/tfs/test_collection

Steps when I trying connect to TFS via TeamExplorer:
Logging on TC Agent machine with credentials tcdomain/user1 and

a) open IE with address https://srv.tfsdomain.com/tfs/
b) install certificate from server with credentials tfsdomain/user2.
c) open TFS2010 & TeamExplorer, add new server https://srv.tfsdomain.com/tfs/
and everything work fine.

Steps when I trying connect to TFS via TC (VCS root):
Logging on TC Agent machine with credentials tcdomain/user1 and

a) run agent service with user tcdomain/user1
b) open IE with address https://srv.tfsdomain.com/tfs/
c) install certificate from server with credentials tfsdomain/user2.

d) open tc web page and build conf,
e) open Version Control Settings page and setting up Checkout mode: Automatically on agent.
f) open Edit VCS Root page with following next params:
- VCS root name:TestTFS
- Type of VCS: Team FoundationServer
- Url: https://srv.tfsdomain.com/tfs/test_collection
- User name: tfsdomain/user2
- Password: ******
- Root: .$/testroot/

  and when I pressing button "Test connection" error occured.

Thx 4 any help.

ps, sorry 4 English :|
psps, если требуется, могу и на русском написать, будет получше.