I have been working on a Sharepoint migration over the last couple of weeks. Sites have been brought over to our new server (new AD). I got permissions all sorted and we proved that we could do the migration and have all the sites up and working at our end.
I have done a final migration of the content databases from the old server to the new to get the most up to date versions. I used get-spcontentdatabase on the old server, exported the listed databases in .bak format, copied the data over to the new server, stopped the sharepoint services, restored the affected databases from the new backup and restarted all the sharepoint stuff.
I have 4 sites (web applications) in total and 3 of them seem to be up and working.
My problem is that the main site which runs on port 80 is not working since restoring the most up to date database.
I am getting a 404 not found error.
After some googling, I found someone suggestions I add _layouts/sitemanager.aspx to the site URL to see if its just the main page thats not working. I tried this and I get a 500 error.
Is anyone able to help?
UPDATE
I have also tried clearing the cache and restarting the sp timer service as per this post
