Access is denied. Verify that either the Default Content Access Account has access to this repository, or add a crawl rule to crawl this repository.

This sharepoint issue is all over the internet these days. This issue comes up using SharePoint search crawling on the same box. Other option is install Sharepoint Search on different server then your web applications. Below is registry key to disable the loopback check. From my experience changing this key doesn’t require a restart.

1. Click Start, click Run, type regedit, and then click OK.
2. In Registry Editor, locate and then click the following registry key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

3. Right-click Lsa, point to New, and then click DWORD Value.
4. Type DisableLoopbackCheck, and then press ENTER.
5. Right-click DisableLoopbackCheck, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Quit Registry Editor, and then restart your computer.

After you switch that for SharePoint 2010 go to General Application Settings –> Farm Search Administration –> Search Service Application –> Content Sources –> Start all Crawls

Ref:

401 BisSubscube TFS 2010 Issue

http://blog.patricknielsen.net/2011/01/bissubscribeexe-tf30063-you-are-not.html

KB 

http://support.microsoft.com/kb/896861/en-gb