One day my Internet Explorer 11 began to block things it shouldn’t and not block things it should.
When i wanted to check the blocking lists (remember, Internet Explorer has blocking lists capable of blocking ads and malware and tracking), Internet Explorer instantly crashed.
I reopened the Browser and tried the same… Crash… again and again.

To fix it, i needed to open Regedit through the key combination WINDOWS + R , then type REGEDIT and press OK.

Navigate to the Registry key:

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Safety\PrivacIE

And rename or delete the “UserFilterData”

Now try to open your Internet Explorer blocking lists… if it still crashes, you need to restart your computer.