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Troubleshoot Mode Thunderbird

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How to use Thunderbird's Troubleshoot Mode to find and fix problems, especially if they are caused by add-ons.
How to use Thunderbird's Troubleshoot Mode to find and fix problems, especially if they are caused by add-ons.

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This article describes the ''Troubleshoot Mode'' of Thunderbird, which can be used to find and fix problems, especially if they are caused by add-ons. __TOC__ =What is Troubleshoot Mode and how does it work?= ''Troubleshoot Mode'' is a special mode of starting Thunderbird that can be used to find and fix problems with your installation of Thunderbird. Troubleshoot Mode will temporarily disable your add-ons and reset some custom settings in order to avoid these possible causes of problems. If you find that a certain problem with your Thunderbird installation does ''not'' happen in Troubleshoot Mode, then most likely one of your add-ons or a custom setting is causing the problem. {note}'''Note:''' Thunderbird Troubleshoot Mode was previously called ''Thunderbird Safe Mode''{for mac,linux}.{/for}{for win}, which has no relation to ''Windows'' Safe Mode.{/for} Prior to Thunderbird 91, the menu entry was labeled ''Restart with Add-ons Disabled''.{/note} =Starting Thunderbird in Troubleshoot Mode= '''If Thunderbird is not running:''' ;{for win}Hold down the {key Shift} key while starting Thunderbird.{/for}{for mac}Hold down the {key option} key while starting Thunderbird.{/for}{for linux}From '''Terminal''', run this command: <code>thunderbird -safe-mode</code><br>You may need to specify the Thunderbird installation path (e.g. {filepath /usr/lib/thunderbird}).{/for} '''If Thunderbird is already running:''' ;#At the top right of the Thunderbird window, click the {button ≡} button. ;#Click menu {menu Help}. ;#Click {menu Troubleshoot Mode} and in the ''Restart in Troubleshoot Mode'' prompt, choose {button Restart}. The troubleshooting mode dialog will be displayed. ;#In the '''Thunderbird Troubleshoot Mode''' dialog, click {button Continue in Troubleshoot Mode} button. ;[[Image:TB91-thunderbird-troubleshoot-mode-dialog-marked]] {warning}'''Note:''' If you just want to restart Thunderbird in Troubleshoot Mode temporarily, do '''''not''''' check the checkboxes, because that would save the settings of Troubleshoot Mode as your regular settings.{/warning} =Confirming that Troubleshoot Mode is activated= To confirm that Thunderbird is currently running in Troubleshoot Mode: ;#At the top right of the Thunderbird window, click the {button ≡} button. ;#Click menu {menu Add-ons and Themes}. If Thunderbird is in Troubleshoot Mode, you will see the following banner near the top of the ''Add-ons Manager'' tab content: &nbsp;&nbsp;&nbsp;(i) All add-ons have been disabled by safe mode. =Turning Troubleshoot Mode off= ;#At the top right of the Thunderbird window, click the {button ≡} button. ;#Click menu {menu Help} ;#Click menu {menu Turn Troubleshoot Mode Off}. This will immediately close Thunderbird and restart it in normal mode. Or you can just exit and restart Thunderbird as you normally would. <br>
This article describes the ''Troubleshoot Mode'' of Thunderbird, which can be used to find and fix problems, especially if they are caused by add-ons. __TOC__ =What is Troubleshoot Mode and how does it work?= ''Troubleshoot Mode'' is a special mode of starting Thunderbird that can be used to find and fix problems with your installation of Thunderbird. Troubleshoot Mode will temporarily disable your add-ons and reset some custom settings in order to avoid these possible causes of problems. If you find that a certain problem with your Thunderbird installation does '''not''' happen in Troubleshoot Mode, then most likely one of your add-ons or a custom setting is causing the problem. {note}'''Note:''' Thunderbird Troubleshoot Mode was previously called ''Thunderbird Safe Mode''{for mac,linux}.{/for}{for win}, which has no relation to ''Windows'' Safe Mode.{/for} Prior to Thunderbird 91, the menu entry was labeled ''Restart with Add-ons Disabled''.{/note} =Starting Thunderbird in Troubleshoot Mode= '''If Thunderbird is not running:''' ;{for win}Hold down the {key Shift} key while starting Thunderbird.{/for}{for mac}Hold down the {key option} key while starting Thunderbird.{/for}{for linux}From '''Terminal''', run this command: <code>thunderbird -safe-mode</code><br>You may need to specify the Thunderbird installation path (e.g. {filepath /usr/lib/thunderbird}).{/for} '''If Thunderbird is already running:''' ;#At the top right of the Thunderbird window, click the {button ≡} button. ;#Click menu {menu Help}. ;#Click {menu Troubleshoot Mode} and in the ''Restart in Troubleshoot Mode'' prompt, choose {button Restart}. The troubleshooting mode dialog will be displayed. ;#In the '''Thunderbird Troubleshoot Mode''' dialog, click {button Continue in Troubleshoot Mode} button. ;[[Image:TB91-thunderbird-troubleshoot-mode-dialog-marked]] {warning}'''Warning:''' If you just want to restart Thunderbird in Troubleshoot Mode temporarily, do '''''not''''' check the checkboxes, because that would save the settings of Troubleshoot Mode as your regular settings.{/warning} =Confirming that Troubleshoot Mode is activated= To confirm that Thunderbird is currently running in Troubleshoot Mode: #At the top right of the Thunderbird window, click the {button ≡} button. #Click menu {menu Add-ons and Themes}. If Thunderbird is in Troubleshoot Mode, you will see the following banner near the top of the ''Add-ons Manager'' tab content: &nbsp;&nbsp;&nbsp;(i) All add-ons have been disabled by safe mode. =Turning Troubleshoot Mode off= #At the top right of the Thunderbird window, click the {button ≡} button. #Click menu {menu Help} #Click menu {menu Turn Troubleshoot Mode Off}. This will immediately close Thunderbird and restart it in normal mode. Or you can just exit and restart Thunderbird as you normally would.

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