minimserver doesn't start on windows server 2012

[simoncn]

If you exit MinimServer, are you able to manually delete the file C:\Users\Administrator\AppData\Roaming\MinimServer\libext\jminim-0.7.114.jar?

It is probably a good idea to delete everything in the folder C:\Users\Administrator\AppData\Roaming\MinimServer\libext. MinimServer should automatically install the latest update 111 into this folder the next time you start MinimServer.