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Cannot remove roles from Server 2012 R2

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Last Modified: 2019-03-09
One of our clients is experiencing issues with their Windows server.  Their previous IT installed the Server Essentials Role, along with almost every role available (Hyper-V, RDS, Fax server, etc.).  I have removed the Server Essentials Role successfully, (They have a 2012 R2 Standard license).  I need to remove the excess roles and get the machine down to only being a domain controller, DNS server, and DHCP server.  When I try to remove any of the other installed roles it fails completing the operation after the reboot and undoes the changes.  I have run the DISM utility multiple times and it keeps indicating it fixed corruption in the component store, but after a reboot and running the /scanhealth parameter, it still discovers more corruption (have tried this cycle 4 times).

Advice on where to go, or how to troubleshoot is greatly appreciated
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Seth SimmonsLead Systems Administrator
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Commented:
i would just rebuild it
if you have licenses for it, you could build a 2016 (or 2019) core domain controller with only those necessary services; less to patch also
seems like trying to just remove the roles as it is is becoming more trouble than it's worth

Author

Commented:
I won't go into too much detail, but we need to do the removal without wiping the existing data. I wish reinstall was an option but the client is adamant about salvaging the server.
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Distinguished Expert 2019

Commented:
If the issue relates to resource, stop the unnecessary services from running.

It might be your only option.

Potentially the removal of the essentials is what prevents these roles from uninstalling.
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