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After Upgrading to new version Firefox will not open at all

Posted

I am running Windows 7 - 64 bit version. Firefox prompted me to upgrade to the new version, which I did. It downloaded straightaway but after I installed it the programme does not appear on screen at all. This hapenned several weeks ago so I uninstalled it and went back to an earlier version. Now I cannot work out how to do this again, so I am stuck without Firefox altogether.

I am running Windows 7 - 64 bit version. Firefox prompted me to upgrade to the new version, which I did. It downloaded straightaway but after I installed it the programme does not appear on screen at all. This hapenned several weeks ago so I uninstalled it and went back to an earlier version. Now I cannot work out how to do this again, so I am stuck without Firefox altogether.

Additional System Details

This happened

Every time Firefox opened

This started when...

I upgraded to latest Firefox version

Installed Plug-ins

Cannot work out how to find out.

Application

  • User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0; .NET CLR 2.0.50727; SLCC2; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Media Center PC 5.0; SLCC1; .NET4.0C; IEMB3)

More Information

alan_r 127 solutions 1451 answers

I would be interested if you or someone else can tell me what the IEMB3 in your User Agent string is.

If you get to the stage where Fx 6 seems to be installed, try starting it in Firefox Safe Mode - hold down the Shift Key as you double click on the Firefox icon>ignore the page that opens>Continue. If the browser opens O.K. you need to do some Troubleshooting - in Default theme -

https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

I would be interested if you or someone else can tell me what the '''IEMB3''' in your User Agent string is. If you get to the stage where Fx 6 seems to be installed, try starting it in Firefox Safe Mode - hold down the Shift Key as you double click on the Firefox icon>ignore the page that opens>Continue. If the browser opens O.K. you need to do some Troubleshooting - in Default theme - https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Modified by alan_r