Great idea -- yes the web client and my iphone app work. The Windows app is saying, "Syncing temporarily paused. You can continue editing while Evernote reconnects." So that must be the problem.
So I un=installed and re-installed. Works fine unitl I search. Tells me "Search Failed" and then syncing temporarily paused.
Ideas for how to address?
And thank all three of you for the great input here!