Trust relationship between this workstation and the primary domain

I am facing a big issue here. At the time of adding a new user to the workstation I am facing a error related to some trust relationship. I am using a old user account. This was used before and at that time there was no error. But now I am facing a problem. The error is related to some trust relationship between this workstation and primary domain. I cannot understand what wrong I did. I am just rying to re-add a computer from AD.

The main issue lies with wrong dns settings due to which you are getting that problem. It is necessary that you check out the dns settings first and then ensure then run command to resolve your dcs. Also just check that firewall is not blocking the connectivity. Number of time this kind of issue appear due to improper firewall.