My DC server crashed and the backup failed (windows 2008R2). My secondary DC is on a Windows 2003 server. I built the Windows R2 machine back from scratch and I reestablish it as the primary DC. I had to remove all of the PC user's off the domain and then add it back because I was experience "Trust Relationship Issues with the primary domain". This worked and all my local users are on and working just fine. My remote locations I'm attempting to remote desktop and it is giving me the "trust relationship" error so I printed notes for my workers there to take it off the domain and re-add it back to the domain. They got to the point of re-adding it back to the domain and they get the "trust relationship" error. Any thoughts on how to add them back to the primary domain controller?