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slow delayed startup second minute launch open

This article describes some causes of a long start up time and steps you can take to improve it.

This article describes some causes of a long start up time and steps you can take to improve it. *If Firefox starts but isn't responsive, see [[Firefox hangs or is not responding - How to fix#w_hang-loading-first-window]]. *If Firefox does not start up at all, see [[Firefox won't start - find solutions]]. {for fx13} {note}'''Note:''' [[Template:reset-fx]]{/note} {/for} __TOC__ = Change the home page = Problems with a website can cause Firefox to take a long time to start. Try changing your Firefox home page to the default home page or a blank page. See [[How to set the home page]] for instructions. = Change how windows and tabs are loaded = {for not fx13} If you set Firefox to use the [[Restore previous session - Configure when Firefox shows your most recent tabs and windows|Session Restore]] feature to show your windows and tabs from last time, Firefox can take a long time to start if you had lots of websites open the last time you used Firefox. Check '''Don't load tabs until selected''' in the [[Startup, home page and download settings|General panel of the {for win}Options{/for}{for mac,linux}Preferences{/for} window]] so that only the last selected tab is loaded at startup. {for win}<br><br>[[Image:Startup-loadtabs]]{/for} {/for} {for =fx13,=fx14} If you set Firefox to use the [[Restore previous session - Configure when Firefox shows your most recent tabs and windows|Session Restore]] feature to show your windows and tabs from last time, Firefox can take a long time to start if you had lots of websites open the last time you used Firefox. Check '''Don't load tabs until selected''' in the [[Startup, home page and download settings|General panel of the {for win}Options{/for}{for mac,linux}Preferences{/for} window]] so that only the last selected tab is loaded at startup (This should be the default setting). {for win}<br><br>[[Image:Startup-loadtabs]]{/for} {/for} {for fx15} If you set Firefox to use the [[Restore previous session - Configure when Firefox shows your most recent tabs and windows|Session Restore]] feature to show your windows and tabs from last time, Firefox can take a long time to start if you had lots of websites open the last time you used Firefox. Check '''Don't load tabs until selected''' in the [[Tab preferences and settings|Tabs panel of the {for win}Options{/for}{for mac,linux}Preferences{/for} window]] so that only the last selected tab is loaded at startup (this should be the default setting). {/for} <!-- https://support.mozilla.com/questions/776797 and https://blog.mozilla.com/tglek/2010/10/04/diagnosing-slow-startup --> = Check your antivirus software = Firefox reads a number of files normally during startup. Some antivirus software may do intensive scans of each of these files during startup and block access until those scans complete. If the problem began after installing, updating, or reconfiguring your antivirus software, contact the software provider for assistance. <!-- https://blog.mozilla.com/tglek/2010/10/04/diagnosing-slow-startup --> = Troubleshoot extensions or themes = Firefox loads extensions when it starts up and many extensions add startup tasks. See [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] for steps on how to identify an extension that may be causing the problem. {for win} = Optimize Windows = Speed up Windows and make your computer work better. *{for winxp}See [http://windows.microsoft.com/en-us/windows-xp/help/setup/maintenance-improve-performance Maintenance tasks that improve performance] on microsoft<!-- -->.com.{/for}{for win7}See [http://windows.microsoft.com/en-US/windows7/Optimize-Windows-7-for-better-performance Optimize Windows 7 for better performance] on microsoft<!-- -->.com.{/for}{for win8}See [http://windows.microsoft.com/en-us/windows-8/improve-pc-performance Ways to improve your PC's performance] on microsoft<!-- -->.com.{/for} {/for} = Other solutions = If the previous suggestions don't significantly reduce Firefox startup time, see [[Troubleshoot and diagnose Firefox problems]] for other steps you can take to resolve the problem. [[Template:ShareArticle|link=http://mzl.la/MP4wqF]]