Browsers not opening

I have three browsers on my pc.AVG will only allow one to open.When I temp disable AVG all three browsers can be used.I have tried downloading AVG again but it is still the same problem.The antivirus is AVG FREE Version.Has anyone had the same issues.

Hello Ronald,
We apologize for the inconvenience caused.
May I know the name of Browsers in which you are experiencing this issue?
May I know the name of the Browser you are unable to open?
Thank you.