Run a Quick Domain Controller (DC) Health Check

1.) From one of your domain controllers open command prompt as an “administrator”.

2.) Run the first line command as below and press “enter” once added.
It will run a list of quick tests and show you the short answer results “Passed” OR Failed/Errors

dcdiag.exe

If you are looking for something more in-depth on this reporting, then use the command:

dcdiag.exe /v

This will produce a deeper analysis of any errors that are found.