Recent answers to Slov internet speed and websites does not open with Firefox on Windows 10.https://support.mozilla.org/eu/questions/13454622021-07-30T08:49:51-07:00Start Firefox using Troubleshoot(Safe) Mode {web link}
A small dialog should appear. Click
Start2021-07-30T08:49:51-07:00fredmcd-hotmailhttps://support.mozilla.org/eu/questions/1345462#answer-1431523<p><a href="https://support&#46;mozilla&#46;org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode" rel="nofollow">Start Firefox using Troubleshoot(Safe) Mode</a> {web link}
</p><p>A small dialog should appear&#46; Click
<strong>Start In Troubleshoot(Safe) Mode</strong> (not Refresh)&#46;
Is the problem still there?
</p><p><br>
https://support&#46;mozilla&#46;org/kb/Firefox+is+already+running+but+is+not+responding
</p><p>https://support&#46;mozilla&#46;org/en-US/kb/firefox-slow-how-make-it-faster
</p><p>https://support&#46;mozilla&#46;org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix
</p><p>https://support&#46;mozilla&#46;org/en-US/kb/firefox-uses-too-much-memory-ram
</p><p>https://support&#46;mozilla&#46;org/en-US/kb/firefox-hangs-or-not-responding
</p>