I have done all test and steps and still get this message
ENABLE COMPATABILITY VIEW ...........!!!!!! it solved my issue , after all the hastle disablableing other security features to no avail
After having the same problem, and trying to solve it all week, including "enable compatibility view," I downloaded Firefox, downloaded the latest Flash version on that browser, and no longer had a problem. Took less than 5 min. I'm staying away from IE for a while. Sites like Adobe and Facebook don't seem up to speed running IE 11 and Windows 8.1
Enabling Compatibility view SOLVES this.
I tested it with WIn 8 and Win 8.1 to confirm it.
It's in the code on the Adobe page. It doesn't recognize IE11 yet. They're working on it.