See Websites don't load - troubleshoot and fix error messages

TY, but I'm still having problems. As per Firefox connection settings, I can't launch Firefox...thus I can't access Firefox settings. I tried to Right click Firefox shortcut icon, but Properties doesn't provide settings described. Again TY 4 help.

Ok, so firefox won't open now?

Correct

You can find the connection settings in Tools > Options > Advanced : Network : Connection
If you do not need to use a proxy to connect to internet then select "No Proxy" if the default "Use the system proxy settings" setting doesn't work.

See "Firefox connection settings":

• https://support.mozilla.com/kb/Firefox+cannot+load+websites+but+other+programs+can

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.com/kb/Safe+Mode

• Press F10 or tap the Alt key to bring up the "Menu Bar" temporarily if the Menu Bar is hidden.
• Use "Firefox > Options" instead of "Tools > Options" if the menu bar is hidden.

Got it working...TY very much for sticking w/ me.