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October 22, 2008 / red1s

Whenever I run a source content crawl on my Sharepoint content I get a 2436 error in Event Viewer

Regarding Search…..

I struggled with this for awhile. In the Event Logs, I found several "Access Denied" errors with the message "The start address <sts3://yoururl/contentbid={GUID}> cannot be crawled" and error code 2436.

These messages should appear every 5 minutes, when the SharePoint Search Service Timer Job fires. 5 minutes is, of course, assuming the value has not been changed from the default.

So for the solution ……I was able to fix the problem with a registry hack.

My issue was Loopback Checking, which IIS uses to protect against Denial of Service Attacks. Basically, the default value does not allow the Search Service to crawl the site, because it essentially receives a dangerous level of Requests coming from the loopback address (default, which it denies access to "thinking" it is an attack.

See Knowledge Base Article KB896861 at for the fix.

The Short story for this is:

1)Create a DWORD registry key at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Lsa named DisableLoopbackCheck

2) set the value for this key to 1, for TRUE, to disable the loopback checking.

Big Smile

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