Hi,

Please try to use CCleaner for delete Cookie&Cache present on PC. After reinstall Firefox.

Thanks you :)

we don't recommend that application be used with Firefox, as it causes problems

those two crash reports you have posted elsewhere are graphics related: bp-0b3a6ae3-1d1b-46c0-801e-fbd1f2141217 bp-0d73f393-2c26-4b88-acb5-59a112141113

please see if you can resolve them by updating your graphics driver: https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=23764 (for win7 64 bit)

in case this doesn't solve the issue or does not apply to your system, 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).

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

thank you so much phillip, It seems It is resolved. will update here if I face same issue

thanks................

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.