I have 2 DCs in our domain. One of the DC, was down today, and we're working to replace it. So we're running on only one DC now. When I tried to change some group policy on the surviving DC, it gave me a error message saying Domain Controller is not found. Then I went to AD Users and Computers and check on the DC. The role on my working DC is showing as "Workstation or Server," whereas the dead DC is showing as "Domain Controller."
I have installed Active Directory, DNS, and Printer server role on the working DC. How can I bring back the Domain Controller role to this DC?
Thank you in advance for answering.