New answers tagged installation
At least a complete recreation of the farm from the config database up is required. If you installed AD on this specific server, then your local accounts that you used to configure SharePoint are now completely gone. There are no local computer accounts on a DC (unlike a member server). Thus a complete recreation is required for the farm. You 'could' ...
Run SharePoint configuration wizard > disconnect this server from your farm if you didn't select standalone installation at the beginning of the current installation > after SharePoint configuration wizard has been finished try to run it again and configure new farm with the new domain users account.
@hello B, Waqas Sarwar MCSE is right. If you installed Active Directory AFTER installing SharePoint Farm, you mess up all the permissions and database access, because AD users are not the same as the users you had before. I am guessing it is a dev environment (since u installed DC on SP machine), so the easiest way would be to start from scratch: ...
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