Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Unable to open Mozilla Firefox Error- unknown software exception occurred in the application at location 0x7c812fd3

more options

Whenever i click on Mozilla Firefox, this message appears and Firefox won't open. I tried to uninstall and then reinstall it but that didn't help. I still can't open Firefox. My Google Chrome and IE work fine.. Can you please tell me what's causing this problem and what i can do to fix this? Please help me out.

Whenever i click on Mozilla Firefox, this message appears and Firefox won't open. I tried to uninstall and then reinstall it but that didn't help. I still can't open Firefox. My Google Chrome and IE work fine.. Can you please tell me what's causing this problem and what i can do to fix this? Please help me out.

All Replies (1)

more options

Hello Helen Please try to start firefox into safemode by pressing the shift key while the application is launching & disable hardware acceleration in the firefox menu ≡ > options > advanced > general (that setting will take a restart of the browser to take effect).

https://support.mozilla.org/en-US/kb/firefox-crashes-troubleshoot-prevent-and-get-help#w_check-to-see-if-the-crash-happens-in-safe-mode

check out if the crash happens in safe-mode