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I inherited a Server 2012r2 OS that was an application server, domain controller, DNS, DHCP, file server, and SQL server. So I added a Server 2019 Hyper-V server and spun up two new DC’s. After moving all FSMO roles over to DC1, I moved over DHCP, and the file server. The 2012r2 Server is now just an application server (with SQL Server because the application depends on it) but it’s still a domain controller and DNS server. I have everything statically assigned on the network pointing to the two new DC’s and file server. Again all FSMO roles have been moved over but I can’t remove the ADDS & DNS roles from the 2012r2 server.<\/p>\n
I went through the Remove Roles and Features section of Server Manager and it looked like it went through when it said it needed to be restarted. So I did and when I opened server manager, the AD & DNS roles were still showing that they’re installed. Even stranger is now Server Manager is asking me to promote the 2012r2 Server to a Domain Controller. Active Directory doesn’t have the 2012r2 Server listed as a DC nor does the AD Admin Center but AD Sites and Servers shows it listed under Default-First-Site-Name. It almost appears like it’s no longer recognized as a DC but when I go back to Remove Roles and Features, it still show’s that it’s installed.<\/p>\n
I tried going through powershell but I get the same error saying the source files cannot be found. I still want to hold onto this server; however, I just want to use it as an SQL & Application server. I just want to remove the DC & DNS roles but it seems like I can’t. Anyone have any suggestions?<\/p>","upvoteCount":1,"answerCount":6,"datePublished":"2024-06-13T22:36:40.346Z","author":{"@type":"Person","name":"spiceuser-isux","url":"https://community.spiceworks.com/u/spiceuser-isux"},"suggestedAnswer":[{"@type":"Answer","text":"
I inherited a Server 2012r2 OS that was an application server, domain controller, DNS, DHCP, file server, and SQL server. So I added a Server 2019 Hyper-V server and spun up two new DC’s. After moving all FSMO roles over to DC1, I moved over DHCP, and the file server. The 2012r2 Server is now just an application server (with SQL Server because the application depends on it) but it’s still a domain controller and DNS server. I have everything statically assigned on the network pointing to the two new DC’s and file server. Again all FSMO roles have been moved over but I can’t remove the ADDS & DNS roles from the 2012r2 server.<\/p>\n
I went through the Remove Roles and Features section of Server Manager and it looked like it went through when it said it needed to be restarted. So I did and when I opened server manager, the AD & DNS roles were still showing that they’re installed. Even stranger is now Server Manager is asking me to promote the 2012r2 Server to a Domain Controller. Active Directory doesn’t have the 2012r2 Server listed as a DC nor does the AD Admin Center but AD Sites and Servers shows it listed under Default-First-Site-Name. It almost appears like it’s no longer recognized as a DC but when I go back to Remove Roles and Features, it still show’s that it’s installed.<\/p>\n
I tried going through powershell but I get the same error saying the source files cannot be found. I still want to hold onto this server; however, I just want to use it as an SQL & Application server. I just want to remove the DC & DNS roles but it seems like I can’t. Anyone have any suggestions?<\/p>","upvoteCount":1,"datePublished":"2024-06-13T22:36:40.412Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/1","author":{"@type":"Person","name":"spiceuser-isux","url":"https://community.spiceworks.com/u/spiceuser-isux"}},{"@type":"Answer","text":"
Have you restarted the 2012 server yet? The magic doesn’t occur until restarts are complete.<\/p>","upvoteCount":0,"datePublished":"2024-06-13T23:38:28.089Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/2","author":{"@type":"Person","name":"redrumrudy","url":"https://community.spiceworks.com/u/redrumrudy"}},{"@type":"Answer","text":"
Yeah I’ve restarted a few times now.<\/p>","upvoteCount":0,"datePublished":"2024-06-13T23:51:04.676Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/3","author":{"@type":"Person","name":"spiceuser-isux","url":"https://community.spiceworks.com/u/spiceuser-isux"}},{"@type":"Answer","text":"
Were any errors presented during removal? Any related event viewer errors? Errors during restart?<\/p>","upvoteCount":0,"datePublished":"2024-06-13T23:56:08.374Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/4","author":{"@type":"Person","name":"redrumrudy","url":"https://community.spiceworks.com/u/redrumrudy"}},{"@type":"Answer","text":"
Only error message is that the source files are missing.<\/p>","upvoteCount":0,"datePublished":"2024-06-13T23:59:09.455Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/5","author":{"@type":"Person","name":"spiceuser-isux","url":"https://community.spiceworks.com/u/spiceuser-isux"}},{"@type":"Answer","text":"
Try to list the Domain Controllers using PS Command<\/p>\n
Get-ADDomainController -Filter * | Select Name\n<\/code><\/pre>\nIf the 2012 Server is not listed, this mean tha DC Demote was successuly done. You just have the feature installed, but it’s not active.<\/p>","upvoteCount":0,"datePublished":"2024-07-02T21:10:48.333Z","url":"https://community.spiceworks.com/t/unable-to-remove-ad-ds-dns-roles/1086738/6","author":{"@type":"Person","name":"eduardogartner","url":"https://community.spiceworks.com/u/eduardogartner"}}]}}
