We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.

1. On the keyboard, press [Windows] The image "Windows key" does not exist. + [R]. This should bring up a Run window that contains a text field.
2. In that text field, type %APPDATA% and press Enter. An explorer window should open.
3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
4. Now, you should see a list of files that contain reports. Go to View > Arrange Icons by > Modified to get the most recent files at the top of the window.
5. Open the most recent 5 files with a text editor and copy the IDs.
6. Paste each ID with bp- into the reply window on the forums.

Thanks in advance!

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Since I wasn't sure how to paste the ID's, here are the Crash ID Nos.: bp-73b4b2fa-f45d-4044-9f49-ad3c42161103 bp-817fba50-cca9-481c-a327-287d62161102 bp-6a9394a5-a198-41b7-a9af-bdc4e2161030 bp-b2fe8898-0611-402c-9022-a7b692161029 bp-e306b40e-b395-4551-8dfc-3c2eb2161028

Thank you for your help.

thank you, can you please try to restart your pc once, uninstall firefox through the system control panel (your settings like bookmarks won't be affected by this) and then install the firefox 64bit version through the following link: https://download.mozilla.org/?product=firefox-latest&os=win64&lang=en-US

Thank you, that worked!