Internet Explorer Blocked

I’ve been using Avast free trial and liked it so paid for Avast Antivirus support earlier this week when the free trial ran out. I’ve had to uninstall it as every time I try to use Internet explorer it blocks it. I’ve changed the firewall settings until I’m blue in the face and I’ve tried everything else I can think of. Anyone know how I can use what I’ve paid for AND still use the internet?

Hi there, when you uninstalled and then re-installed was it a clean one ?

Download Avast Uninstall Utility to your Desktop.
Download the correct version of Avast
Avast Free
Avast Pro
Avast Internet Security
Avast Premier
Disconnect from the net
Uninstall Avast via control panel

[]Run the uninstall tool and accept the reboot to safe mode
[
]Once complete reboot your system
[*]Reinstall Avast


What security software was there before you installed avast and did you removed it prior to installing avast?
If you removed it, how did you do it?