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Update Firefox then could not access internet. I uninstalled & attempted to reinstall Firefox. This failed.

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  • Seneste svar af cor-el

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After the 2nd attempt to uninstall and reinstall, I deleted the Mozilla Firefox directory and ran Firefox Setup 35.0.1.exe again:

The directories/files that Firefox Setup 35.0.1.exe created in Program Files (x86) were:

 - browser/extensions/{a numeric key}.xpi
 - plugins/npMeetingJoinPluginOC.dll,  plugins/nppdf.dll
 -  tobedeleted/ nsb8671.tmp, and 13 more files of this form

The Setup process is 7z Setup SFX (32 bit) is hung according to the Windows Task Manager.

I deleted the hung process(es), deleted the Mozilla Firefox directory and tried to run Firefox Setup 35.0.1.exe again. The result is a hung process 7z Setup SFX (32 bit) and no Mozilla Firefox directory was created.

Now running Firefox Setup 35.0.1.exe results in just a hung process, no directory of files are created.

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

Under Advanced, Select Network. Look for Configure How Firefox Connects and press the Settings button. Check the settings.

Some problems occurs 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}

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What security software (firewall, anti-virus) do you have?