I get a security error when trying to view the below web page:
When the installation is complete, a Web browser window opens and displays the Configure Administrative Virtual Server page. After confirming that the page appears, close the browser window without making any changes.
I was using the TFSInstall_V51020 with TFS beta 3 refresh.
Thanks for any help
Did you install TFS on a domain controller? If so, you might find that the security on your Temporary ASP.NET Files folder isn't allowing the user you chose for TFSService to write here. Grant modify permission to this folder; the subfolders will inherit this.
If you're still having problems, take a look in the Microsoft TFS forums. Many of the TFS team frequent these.