If you get this error in a search when you know your account has access to the site, and you are running the index service and web on a single server the issue could be resolved by disabling the loop back check. Note: This does open your sever certain security threats. 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.