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Older version Firefox on Win7_64 used to be stable but now crashes?

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I have used FF for years and it has always been very stable. Recently I had to do some cleaning and downloaded a few important MS updates. I am very selective as to what updates I will install.

Then my previously stable FF started hanging. For backup I can run Chrome portable but even that wouldn't run. I tried to stop the Firefox.exe service and it would not go away without a reboot. This is a particularly nasty problem and the most offered solution is to stop hardware acceleration, which didn't work for me. Then I discovered parent.lock file in the profile and with an unlock app I could eventually kill FF.

I did a clean re-install after searching and finding all those Mozilla files in the system folders and registry entries (why no app to do this?). After a clean re-install with the default profile, the lockup problems would come back. I even tried installing a 32 bit version with the same result. I eventually solved my problem without a solution anywhere!

Go to Windows programs and features, then turn on windows features and despite the warning, I turned off Internet Explorer 11. OK I accept that some MS update or newer version of MS Internet Explorer might have solved my problem, but this worked for me and took a long time to find. I also accept an up to date version of FF may work differently with better security, but I like my old version and the 3rd party addons that aren't compatible with new versions.

Now if I watch the Firefox.exe process (there are sometimes 2 or 3) they go away at every shut down and Chrome my backup, which doesn't use a lock file, works in an emergency for any sites needing higher security

I have used FF for years and it has always been very stable. Recently I had to do some cleaning and downloaded a few important MS updates. I am very selective as to what updates I will install. Then my previously stable FF started hanging. For backup I can run Chrome portable but even that wouldn't run. I tried to stop the Firefox.exe service and it would not go away without a reboot. This is a particularly nasty problem and the most offered solution is to stop hardware acceleration, which didn't work for me. Then I discovered parent.lock file in the profile and with an unlock app I could eventually kill FF. I did a clean re-install after searching and finding all those Mozilla files in the system folders and registry entries (why no app to do this?). After a clean re-install with the default profile, the lockup problems would come back. I even tried installing a 32 bit version with the same result. I eventually solved my problem without a solution anywhere! Go to Windows programs and features, then turn on windows features and despite the warning, I turned off Internet Explorer 11. OK I accept that some MS update or newer version of MS Internet Explorer might have solved my problem, but this worked for me and took a long time to find. I also accept an up to date version of FF may work differently with better security, but I like my old version and the 3rd party addons that aren't compatible with new versions. Now if I watch the Firefox.exe process (there are sometimes 2 or 3) they go away at every shut down and Chrome my backup, which doesn't use a lock file, works in an emergency for any sites needing higher security
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  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0

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Tyler Downer
  • Top 25 Contributor
  • Moderator
1529 solutions 10657 answers

Can you please update to Firefox 67.0.4 and let me know if you still see an issue?

Can you please update to Firefox 67.0.4 and let me know if you still see an issue?
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