“The trust relationship with this workstation and the primary domain has failed”
This error message isn’t a big problem when you still have the local computers administrative usernames and login passwords.
You just change your login details from
enter you password, remove the computer from the domain by adding it to a workgroup, reboot, re-add it to the DOMAIN and then the trust relationship is rebuilt and you can then use your DOMAINNAME\username credentials again.
But what do you do if you haven’t got a set of administrative local credentials?
You need to somehow break into the computer and to do this you can use this:- http://ntpasswd.com/ download either a USB or CD/DVD iso zip and then follow the instructions.
The only downside to this is you have to have physical access to the machine.
But I have just found that an onsite non-IT person can do all the steps needed to enable the account and clear the password of the local Administrator without too much difficulty.