Terminal Server 2012 - Adobe Acrobat will not stay as the Default PDF Application

Hello,

This worked flawlessly in the past and not sure what happened and now even thought the default app for handling pdf is Adobe Acrobat, when you double click on a document it opens on Adobe Reader. not all my users use Adobe Acrobat so i have to keep adobe reader on the server as well (for licensing ). simply right clicking on the file to "open with" is not an option, users need to be able to open the file from our accountancy software. I have already tried switching the default app and switching it back with no luck. any help is greatly appreciated!

Thanks