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Firefox 68.0 totally unresponsive - opens will not load websites, cannot access options menu

  • 5 replies
  • 1 has this problem
  • Last reply by jscher2000

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After w10 upgrade to build 1903 firefox totally unresponsive. Other browsers work fine as does tbird, Version 67 also did not work. Tried uninstalling and reinstalling and safe mode and no addons and refresh - nothing is working. please help.

All Replies (5)

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As an experiment, could you temporarily hide your Firefox data folder from Firefox and see whether Firefox can create a new one and start up? Here's how:

Paste the following shortcut path into the Windows 10 system search box and press Enter to launch it in File Explorer:


That should expand into the hidden folder:


Right-click the Firefox folder and use Rename to change it to FirefoxOLD (or Firefox1, etc.).

When Firefox starts, it should determine that it doesn't have a data folder and create one. Will it operate?

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Thank you. No help - same behavior as before meaning nothing. Cannot open Preferences and no internet access.

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Another user reported that a policy in the Symantec Endpoint Protection security software caused a similar behavior (1264492). By any chance do you have that software running on your system?

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I use Norton Security but disabling it did not solve the problem.

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Some other users reported problems with Win10 1903 + Firefox 67 or 68, but I don't see a clear pattern or proven solution. Hopefully another volunteer will have a theory.