Cannot open new windows or tabs, but existing windows and tabs work.
Cannot open new windows or tabs, but existing windows and tabs work.
Alla svar (2)
Start Firefox using Troubleshoot(Safe) Mode {web link}
A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?
What security software do you have?
It is possible that (anti-virus) security software is causing the problem. Try to disable security software temporarily to see if that makes a difference.