Hello,

Maybe you are Restoring Previous Session everytime. You can turn off this feature by following way:-

• Type about:preferences#general in URL bar and press enter.
• Uncheck the Restore Previous Session.

Hope it helps. Thank You.

Hi Ed, I just wanted to mention that 3 users with Yahoo set as their home page and one user with Gmail set as their home page also reported getting a blank page at startup in Firefox 77.0.1 in recent days. I haven't see an explanation for it yet. Since multiple sites are affected, it could be a setting or add-on issue, yet to be tracked down.

Thank you for the quick response, Shashank Shekhar and jscher2000! Restore Previous Session was unchecked. I shall have to wait for a solution. It is no big issue because I can start it manually. Thanks anyway!!

https://support.mozilla.org/en-US/kb/firefox-wont-start-find-solutions

Thank you very much Pallavi kumari! I followed the link to mozilla and tried some solutions. At one point it said that if emptying cache and removing cookies would not help you will have to wait till a solution will appear. I think I will do that. Thanks for your efforts!!

browser.startup.homepage: www.google.lv ... Youtube videos are not playing same as videos and audios from different other sites ... graphics driver by following the steps mentioned in these Knowledge base articles: ... Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, ...

This article describes what to do if Firefox doesn't open when you click the Firefox icon.

• If you get a message you can dismiss (e.g. "TypeError: Components.classes['@ ... ;1'] is undefined", "onload error TypeError: ...", "Exc in ev handl: ...") and can open Firefox, see Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.

• If Firefox starts but won't load any websites, see Websites don't load - troubleshoot and fix error messages.

The Refresh Firefox feature can fix many issues by restoring Firefox to its default state while saving your essential information. Consider using it before going through a lengthy troubleshooting process. The Firefox Safe Mode window includes a Refresh Firefox option. You can start Firefox in Safe Mode by holding down the shiftkey while starting Firefox.