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New Install of Firefox freezes when starting up program. Uninstall/re-installed multiple times.

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I have three identical Citrix servers. I installed Firefox on all three. Two work great. The third freezes on start. Seems like it freezes before it completely starts up. I only get one instance of firefox in task manager and there should be two or more. Opens to white blank page. Websites do not work. Can't get to preferences/options to make changes. I have uninstalled and reinstalled several times each time removing all profile directories as well as registry entries and rebooted. Everytime same result. Not sure where to go from here.

I have three identical Citrix servers. I installed Firefox on all three. Two work great. The third freezes on start. Seems like it freezes before it completely starts up. I only get one instance of firefox in task manager and there should be two or more. Opens to white blank page. Websites do not work. Can't get to preferences/options to make changes. I have uninstalled and reinstalled several times each time removing all profile directories as well as registry entries and rebooted. Everytime same result. Not sure where to go from here.
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Additional System Details

Installed Plug-ins

It doesn't get that far. Registry doesn't have the plugin keys. Adobe Flashplayer, Micorsoft Silverlight, Microsoft Office Authorization plubin for NPAPI browsers.

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

More Information

Question owner

I have also run a malware and virus scan

I have also run a malware and virus scan
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FredMcD
  • Top 10 Contributor
4187 solutions 58445 answers

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select Network.

[v56+] Type about:preferences#general<enter> in the address bar. Look for Network. +++++++++++++++++++++ Look for Configure How Firefox Connects and press the Settings button. If you are using a proxy, make sure those settings are correct. If there is no proxy, first try No Proxy. If there is a problem, then try System Proxy.


Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet {web link}

Type '''about:preferences#advanced'''<Enter> in the address bar. Under '''Advanced, ''' Select '''Network. ''' [v56+] Type '''about:preferences#general'''<enter> in the address bar. Look for '''Network. ''' +++++++++++++++++++++ Look for '''Configure How Firefox Connects''' and press the '''Settings''' button. If you are using a proxy, make sure those settings are correct. If there is no proxy, first try '''No Proxy. ''' If there is a problem, then try '''System Proxy. ''' ---------- Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again; * Make sure your Internet security software is up-to-date (i.e. you are running the latest version). * Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see [https://support.mozilla.org/en-US/kb/configure-firewalls-so-firefox-can-access-internet Configure firewalls so that Firefox can access the Internet] {web link}
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