This is not a major problem at this point - but it is super annoying - as it bothers me that - so far I am unable to find a solution for this.
I have a few servers at branch locations, for our company, and these servers are terminal servers - or - remote desktop services - as it is now called. The server with the problem is a 2008 R2 server. I used to use an MMC snap in - tsadmin.mmc. This worked fine from the time this server was deployed - and I have used tsadmin for years. Recently something happened and now I cannot open tsadmin.mmc - see attached error message.
I have tried opening MMC first, then opening the tsadmin. I have looked at the location of the files: tsadmin and tsadmin.dll - the files exist - permissions are normal. I have tried restoring those files from earlier backups - nothing I have tried has worked. If I look at another server - where it does work - everything looks the same to me. The only difference is: it works on the other servers - but not this one.
The other MMC functions work. I don't know of any other problems on this server.
It's not critical because - I can still access this server via tsadmin - by connecting to this server via tsadmin from one of the other servers. However - I would like to be able to run tsadmin on this server.