Windows 7: "Security Certificate Revoked" pop up on IE11

I am suddenly experiencing an odd problem when I'm browsing the internet with IE11.

As of last night, I began getting random pop up dialogue boxes that say "The security certificate for this site has been revoked. This site should not be trusted." I have attached a snip of the pop up box as a PNG file.

It first happened with AOL, so I thought it was AOL versus IE11, but then it happened with Facebook and another site. When you click Yes, the pop up reappears a couple more times and then goes away for awhile, but if you refresh the page it's there again. When the pop up is visible, you can't close the IE window unless you force IE to quit.

Thus far, this does not happen when I use Chrome. (It also is not happening on my husband's machine - Win 7, IE11, same network/router etc - but we're usually visiting different sites. He thinks it may be caused by an ad or ads from AOL that stuck around, since it doesn't happen when he goes to FB.)

I haven't downloaded any new software, I'm current on my Win 7 updates, and I run Norton and Malwarebytes (paid editions) plus I periodically run Super Anti-Spyware to try to prevent or eliminate as much junk as I can.

I first tried rebooting and running all the above scans to get rid of cookies - didn't stop it. When I thought that AOL was the problem I added it to trusted sites - didn't stop it.

Next steps - ran disk cleanup to get rid of temporary files and so forth, then used Internet Options delete to get rid of internet related files and cookies and so forth, then ran Norton (complete rather than quick) plus Malwarebytes again. I also found an article that recommended changing my adapter setting for IPv4 DNS server to use a specified DNS site like Google 8.8.8.8 -haven't done that yet.

Since I'm no expert, I figured I'd best come here for advice before I go too far in the wrong direction trying to deal with this myself. Any suggestions?

Is your date and time correct as that will cause it

Yep, date and time are current and correct.

The good news is that when I tried AOL again tonight, after last night's clearing of temp files and cookies and disk cleanup and such, so far the problem has not showed up again.

Maybe it was the magic of telling you all about the problem - scared it off

Seriously, I'll keep you all posted - will monitor for a couple of cycles and if it stays gone I'll close this out as resolved, but for now wish me luck!

Well, clearing all the temp files, cookies, and whatever plus multiple scans to delete whatever they found seems to have cleared this up.

I'll mark this resolved, and be back when I need help or can help someone else.