I've upgraded a pilot group to JRE 8 Update 77 and instructed them to go to java.com and verify the version they have installed (IE 11 on Windows 7 SP1). Too many of them are reporting that after clicking the Verify Java version button, only get a blank browser window.
It worked the first time I tried it, but now all I get is a blank browser Window. My "failure" rate it too high for me to deploy this to the rest of the company.