Hi Anishkrdubey,

Please have a look on below articles. It Will Help You.

https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up

i know what is the problem, i think problem is my antivirus i have installed kaspersky small office security and i think it's block my firefox but i have checked trusted list of kaspersky firefox is added in this field and i have also check block list his block list is empty.so i am totaly confuse what is the exact problem yesterday i have unistalled firefox and my antivirus also after that i have installed both programme that time firefox running good but when i today open firefox it's facing problem again so please help me i m in big trouble.i only use firefox so please do something for me.i have attach image when i click on firefox icon it's take long time to open after 3 minutes its's open but not responding. Thanks

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

To Enable SafeMode

• You can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.
• Once you get the pop-up, just select "'Start in Safe Mode"

If it works in Safe Mode and in normal mode with all extensions (Tools > Add-ons > Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.

Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: "Firefox > Quit Firefox"; Linux: "Firefox/File > Quit")

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

i have already used in safemod but nothing change in my firefox... he's problem is continue.

Create a new profile as a test to check if your current profile is causing the problems. See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

Profile Backup and Restore

• http://kb.mozillazine.org/Profile_backup
• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox