I manage IT operations for a company with over 30 branches. Occasionally a computer will lose it trust relationship with the domain and I have to rejoin it. The problem is that I have to walk someone at the site through the process because I can't ping or RDP computers that are not on the domain. Even computer that work properly and are not on the domain can't be pinged or RDP.
As soon as I join the machine to the domain everything works great. What is preventing me from accessing non-domain computers?