Norton 360 blocks firefox and explorer

I am not a experienced, technical person. I have not been here in a long time, and that's a good thing.
I have a Dell inspiron with Windows 7. I run both Webroot and Norton 360 and have for years with no problem. Sometimes Norton catches a potential problem, sometimes it's Webroot.
I recently renewed Norton 360, and for a few days I received messages from Norton saying that Webroot was incompatible and offered me the opportunity to uninstall Webroot which I did not do.
Now I cannot access Firefox or Explorer. I've uninstalled Norton and then Firefox and Webroot work. I then re-installed 360 and again cannot access Firefox or Explorer.
Trying to reach Norton support is a joke.
Can anyone help? Thank you
George

 

Hi Georgew7510,

Sorry for the inconvenience. It is not recommended to use more than one Security software on the same computer, as these software’s will try to access the system resources at same time and that will decrease the system performance which may lead to a system crash situation. Also, the real time scanner of one anti-virus software may detect the other software signature files as malware and vice-version which will eventually make your computer un-secured. It is always safe and recommended to have one Security software installed on the computer. Could you let me know if you have tried to disable Norton Firewall and check the status? Also, may I know the name/version of Norton security you have in the PC? I could help you with it.

Thanks!

Dinesh
Norton Support