Something isn't right!
One day I opened IE (Windows 8.1 and IE11) and found that the usual 'default browser' screen was different, it looked like this:
What!?! This is not the usual screen!
IMPORTANT: If you have something like the above, do not click on any of the links. You never know where they'll take you or what **** will be installed on your computer. Be careful!
When I opened IE if I watched carefully I could see the normal Microsoft page flash by. There must've been some kind of redirect for res://ieframe.dll/defaultbrowser.htm
When I put my pointer over (don't click it!) the Yes button I saw a link to adnxs.com in the status bar of the browser - adnxs.com is an advertising site, from what I could find on the web, it is not to be trusted. I'd recently installed some dodgy software and I had removed it but obviously 'something' was left behind. I spent a lot of time running different scanners like Malwarebytes on my PC but nothing could fix this problem with IE.
First make sure your computer is clean from malware (viruses, adware, spyware and other malicious software). Malwarebytes is excellent. It's also a good idea to use a registry cleaner, my recommendation is CCleaner, it is free and does a good job of removing old registry entries and temporary files.
To actually fix the issue with the default browser redirecting, run SFC, a Microsoft Windows utility. It replaces the hijacked file (ieframe.dll) with a fresh one. Here's exactly what to do:
Open the Command prompt as Administrator (in Windows 8.1 right click the Start button and click Command Prompt (Admin)).
As you see in the above screen shot, enter the command:
When it has finished restart Windows.
Now open IE, all should be fine.
Don't forget SFC! It can be a lifesaver.
Thanks to ElioJNFerreira who posted this solution to the Microsoft Community Forum. If you want to understand more about this issue, click the link and you'll see the full discussion thread.
Microsoft Community Forum