Cannot get into Firefox which I use all the time. A box keeps popping up, square saying Couldn't load XPCOM. How can I fix this problem?

The problem started after I restored my computer back to 10/01/14. I am in real estate and have lost a lot of time and work due to this problem. Thanks for your help.

Hi,
Does this also happen in Safe Mode? [[Troubleshoot Firefox issues using Safe Mode]]
If so, you will need to do a complete reinstall of Firefox. A visual demonstration on how to do this: https://www.youtube.com/watch?v=x_C2eaNj234 however please keep in mind that before you do this, make a back up of the profile folder [[Back up and restore information in Firefox profiles]]

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