One day, we noticed that our search was not working. Well really, one of the applications managers noticed that it wasn’t working. Anyway, we found the following errors in the event viewer on our SharePoint 2007 Server:
Event Type: Warning
Event Source: Windows SharePoint Services 3 Search
Event Category: Gatherer
Event ID: 2436
Date: 4/11/2009
Time: 11:45:02 PM
User: N/A
Computer: <servername>
Description:
The start address <{somesite}> cannot be crawled.
Context: Application ‘Search index file on the search server’, Catalog ‘Search’
Details:
Access is denied. Check that the Default Content Access Account has access to this content, or add a crawl rule to crawl this content. (0×80041205)
Apparently, this error was caused by a recent Microsoft Windows Update that was installed that affected the "Loopback Check" in order to make the system more secure.
In order for the SharePoint Search Services to work we needed to add the following registry entry with a REG_DWORD value of 0×00000001 (1):
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlLsaDisableLoopbackCheck
Have you ran into this issue or one like it?