http://blogs.msdn.com/buckh/archive/2008/10/20/why-is-the-tfs-2008-version-control-security-dialog-blank.aspxIf you install Service Pack 1 for .NET 3.5 on the server (application tier) without also installing Service Pack 1 for TFS 2008, you will not be able to view permissions in version control. None of your data has been lost. What has happened is that theen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/buckh/archive/2008/10/20/why-is-the-tfs-2008-version-control-security-dialog-blank.aspx#9045104Wed, 05 Nov 2008 23:25:03 GMT91d46819-8472-40ad-a661-2c78acb4018c:9045104cmartindale<p>Say some goon on your dev team installs .NET 3.5 SP1 and then uninstalls it. &nbsp;This still fails to provide you with a populated Security dialog. &nbsp;Do you have any suggestions? &nbsp;At this time we're unable to install TFS 2008 SP1.</p>