While reconfiguring the Search Service Application in our SharePoint 2013 development environment I received the following error when I tried to start the crawl:
Access is denied. Verify that either the Default Content Access Account has access to this repository, or add a crawl rule to crawl this repository. If the repository being crawled is a SharePoint repository, verify that the account you are using has “Full Read” permissions on the SharePoint Web Application being crawled.
After verifying that the account did indeed have the correct permission I did a little digging and found that this was caused by a very common SharePoint headache. Here’s how to disable the LoopBackCheck:
New-ItemProperty HKLM:\System\CurrentControlSet\Control\Lsa -Name “DisableLoopbackCheck” -Value “1″ -PropertyType dword