Trust relationship failed

Problem

Cause 1: Machine's first DNS server isn't set to be the domain's DNS server

Fix: Set the domain's DNS server to be the first DNS server

Cause 2: Fully qualified domain name not used for server.

Fix: Make sure the database server, domain server, and repository server config fields all use the fully qualified domain name.

Cause 3: The machine's time is more than five minutes different from the domain server.

Fix: Fix the time and make sure the machine is getting time from the domain controller. May need to leave and re-join the domain.

Cause 4: Something else has caused the machine to become untrusted; error usually occurs during login.

Fix: Leave and re-join the domain.

See KB to check the trust relationship.