Answer:
The "Trust Relationship Between This Workstation and the Primary Domain Failed" error can be caused by a number of issues, but some common steps to fix it include:
Check the network connection: Make sure that the workstation is properly connected to the network and that there are no issues with the network that might be causing the trust relationship to fail.
Check the DNS settings: Ensure that the DNS settings on the workstation are correct, and that the workstation can communicate with the domain controller.
Check the date and time on the workstation: Make sure that the date and time on the workstation are correct, as an incorrect time can cause the trust relationship to fail.
Check the group policy settings: Ensure that the group policy settings on the workstation are correct, and that the workstation is receiving the correct group policy settings from the domain controller.
Check the computer name: Confirm that the computer name is correct and that it is not duplicating with another computer on the network.
Re-join the computer to the domain: If all else fails, one of the most common solutions is to remove the workstation from the domain and then re-join it. This can be done by opening the System Properties on the workstation, and under the Computer Name tab, click on "Change". Then click on "More" and click on "Delete". Now re-join the computer to the domain by clicking on "Change" again and select "Computer Domain" and enter the domain name, then click on OK.
It is important to note that these steps are not exhaustive, and the specific solution to the error may vary
Step-by-step explanation: