Not sure. I installed fine and Firefox works fine. It maybe that you have too many Extensions installed. I would try and disable some of them if get Firefox running........

I will say that your Video Card drivers are very old ... Please update them here : https://support.amd.com/en-us/download for your AMD Radeon HD 6700 Series Old drivers can cause issues.

Try downloading your Windows 10 Update (KB4025342) from here https://www.catalog.update.microsoft.com/Search.aspx?q=KB4025342 May have gotten corrupted when downloading/installing by updates and decided it did not want to play nice.

Give the above a try and try Firefox again

Please let us know if this solved your issue or if need further assistance.

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most recent 7 - 10 crash reports, and copy them. Press the Reply button. Now go to the reply box and paste them in.

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

Thanks for the quick replies! The AMD video drivers were actually slightly older than the one Windows installed automatically, but I did try them regardless, to no avail. This is a dev machine I built almost 6 years ago, but it still runs great.

All crashes have a "bp-". Here is the list. Thanks in advance.

We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

The crash report is several pages of data. We need the report numbers to see the whole report.

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

This is an incompatibility issue between Comodo and Windows update KB4022716. The current advice is to uninstall Windows update KB4022716.

• https://support.microsoft.com/en-us/help/4022716/windows-10-update-kb4022716

New crashes have been reported after installing Windows update KB4025342, so you may have to remove this update as well.

See also:

• https://forums.comodo.com/news-announcements-feedback-cis/please-read-before-updating-to-microsoft-update-kb4022716os-build-15063447-t119928.0.html

• Bug 1376831 - Startup crash in cmdshim32.dll@0x135b (Comodo, Windows 10)

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

When I uninstalled the update, Firefox worked fine. Also, Comodo just released an update and I then re-applied the Windows patch and now everything is working in harmony.

Thanks again!

Hello,

I am glad to hear that your problem has been resolved. If you haven't already, please select the answer that solves the problem. This will help other users with similar problems find the solution more easily.

Thank you for contacting Mozilla Support.