Long story short, we have a vmware environment with several vm's set up by an outside vendor. The vm's were set up and put into production just in a workgroup. A domain was set up on another physical server but never implimented. Had to work on several projects before getting to finish the new domain setup. Created a new vm to be used as the new domain controller. Tried adding a file server to the domain and had issues. Discovered sysprep was never run on any of the vm's and being new to the virtual side of things didn't realize it wasn't done and needed to be run on my cloned machines.
My question, is there a way to reset the SID's without losing anything on our servers using sysprep? Or is there another option out there for our network? All of our servers are running Server 2008 R2. There are a few SQL servers. I dont want to continue leaving everything in a workgroup, but some of the servers we have would require several vendors to have to do a complete reinstall of everything if we had to start fresh again. I tried searching google but could not find anything useful.