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Firefox won't work on new HP Windows 10 computer

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Brand new HP laptop Windows 10 computer. Installed Firefox first thing and cannot get it to work. During install it asked me to verify my account, but when I clicked the button to open gmail, it will not open. I then tried to go to google.com and that gives the same error message about not being a secure site. I went to the menu help and anything I clicked on from the Help Menu gives the same not secure message. I couldn't even get to Mozilla website! So, here I am in Windows Edge (which set up just fine, including gmail) to ask what is going on.

Any suggestions as to why Firefox will not install properly? I uninstalled and re-downloaded a fresh copy in case something went wrong but it had the same issues after a new install and a refresh. NO bookmarks yet, no extensions or ad-ons, I can't get the browser to work. Please don't say I'm doomed to Windows Edge. I had a previous Windows 10 laptop that worked flawlessly with Firefox until I dropped it.

Brand new HP laptop Windows 10 computer. Installed Firefox first thing and cannot get it to work. During install it asked me to verify my account, but when I clicked the button to open gmail, it will not open. I then tried to go to google.com and that gives the same error message about not being a secure site. I went to the menu help and anything I clicked on from the Help Menu gives the same not secure message. I couldn't even get to Mozilla website! So, here I am in Windows Edge (which set up just fine, including gmail) to ask what is going on. Any suggestions as to why Firefox will not install properly? I uninstalled and re-downloaded a fresh copy in case something went wrong but it had the same issues after a new install and a refresh. NO bookmarks yet, no extensions or ad-ons, I can't get the browser to work. Please don't say I'm doomed to Windows Edge. I had a previous Windows 10 laptop that worked flawlessly with Firefox until I dropped it.

Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299

More Information

Shadow110 1072 solutions 14836 answers

Hi, try it this way and get the full installer : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 61.0.0 with a Full Version Installer

Please let us know if this solved your issue or if need further assistance.

Hi, try it this way and get the full installer : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do : *https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles *https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer Reinstall with Current Release Firefox 61.0.0 with a Full Version Installer *https://www.mozilla.org/firefox/all/ Please let us know if this solved your issue or if need further assistance.
philipp
  • Top 25 Contributor
  • Moderator
5280 solutions 23328 answers

hi, thanks for reporting the problem, so far we have heard about this from avast/avg users whose security software is meddling with encrypted connections. firefox 61 introduced the better security protocol tls 1.3 & apparently avast can't cope with that yet.

as a workaround, please try to disable the scanning of https connections as described in https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message#w_avast-and-avg-security-products

hi, thanks for reporting the problem, so far we have heard about this from avast/avg users whose security software is meddling with encrypted connections. firefox 61 introduced the better security protocol tls 1.3 & apparently avast can't cope with that yet. as a workaround, please try to disable the scanning of https connections as described in https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message#w_avast-and-avg-security-products

Question owner

I'm using McAfee, but I'll see if I can find settings in it as described in that article. Meanwhile, I've installed an older version of Firefox that is working.

Thanks for the help.

I'm using McAfee, but I'll see if I can find settings in it as described in that article. Meanwhile, I've installed an older version of Firefox that is working. Thanks for the help.

Question owner

I'm using McAfee, but I'll see if I can find settings in it as described in that article. Meanwhile, ice installed an older version of Firefox that is working.

Thanks for the help.

I'm using McAfee, but I'll see if I can find settings in it as described in that article. Meanwhile, ice installed an older version of Firefox that is working. Thanks for the help.