Adobe Acrobat Reader Stopped Working

For some reason within the last couple of months, Adobe Acrobat Reader has stopped working.  I am running Win10 Home (64 bit) with latest patches applied.  My symptoms include: [1] Cannot run Reader by clicking on the Adobe Acrobat Reader icon in the apps list and [2] Cannot run Reader by clicking on a PDF file.  When I do either of these two things, I can see that Adove Acrobat Reader is launched in the Task Manager list but that is as far as it get.  To try to fix this I have done [A] uninstalled and reinstalled Adobe Acrobat Reader and [B] ran "Repair Adobe Actobat Reader".  Neither seems to work.  What else can I try to fix this.  Or, is the problem elsewhere that I am missing.  One other thing ... I do not receive any error message that Reader will not run past the Task Manager. Thanks, in advance, for your help.