We are experiencing the same issue. This started on 6/28 for us as well. My machine was fine yesterday but today it is happening to me. To check to see if everyone is having the same issue follow these steps.
1. Open up task manager and watch the processes (in Win 10 click on the Details tab) and sort by name.
2. Launch Acrobat
3. Watch for a process called adobe_licuitl.exe. It will only be there for a second or two. Right after it shows up and disappears Acrobat should close.
We believe this is a licensing issue. If people could confirm that the same is happening to them maybe it will help them resolve the issue.