Dear all, I managed to recover a server 2008 OS with the registry tool on the recovery. After the OS has booted i got an error about login to the domain: Trust relationship between this workstation and primary domain failed The EX2010 is installed on this server, can i just join the server to workgroup and than back to the domain? as shown in the link bellow? http://abhijitw.wordpress.com/2012/02/29/169/ I'm not sure why has this problem occured, but it can be from one of my attempts to install a fresh OS and to /m:recoverserver EX2010 which didnt worked out for me.

Yes that is expected after a recovery, just join it back to the domain. James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com