Why is my Mozilla Thunderbird not starting up?

Why is my Mozilla Thunderbird not starting up?

If Mozilla Thunderbird refuses to start and complains about another instance or a profile in use, the cause may be a stale profile lock left from a crashing instance of Thunderbird. This is usually the error that’s seen:

What to do when Thunderbird wont start on Mac?

On a Mac, open a terminal window and type cd and a space. From the Thunderbird folder in Finder, drag the icon to the terminal window so that the path to the folder immediately follows the cd command. Press Enter to run the command and then enter rm -f .parentlock.

Why does Thunderbird not open a.dat file?

The fact that you are getting a new ‘parent.lock’ file after deleting it, implies Thunderbird is starting to start, but failing to complete the process. re: .dat files I notice that all the .dat files have an icon that implies they open with Norton AV; a yellow circle with black tick. Right click on the .dat file and select ‘Properties’.

Why is my mail not opening in Thunderbird?

Mail If Mozilla Thunderbird refuses to start and complains about another instance or a profile in use, the cause may be a stale profile lock left from a crashing instance of Thunderbird. This is usually the error that’s seen: Thunderbird is already running, but not responding.

Can you run Thunderbird on more than one computer?

Thunderbird can’t run on more than one computer at the same time with the same profile. If Thunderbird is running but not responding, or it’s saying that your profile is in use, here are the steps you should try. Close and reopen Thunderbird. It’s always worth a try to close the application and then reopen it.

Why does Thunderbird take so long to open?

Having AVG so off and scan huge files every few minutes is also something that slows the computer. Hence the exception. Some Thunderbird files will be 1Gb in size. So avg will be busy for about 10 minutes scanning those each time they are updated. Most importantly watch the hard disk lite on your computer. is it busy most of the time?

What to do when Thunderbird wont load emails?

If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender. Restart the operating system in safe mode with Networking. This loads only the very basics needed to start your computer while enabling an Internet connection.

How to restart Thunderbird with add-ons disabled?

Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on “Restart with Add-ons Disabled”. If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.

What to do when Thunderbird is in safe mode?

The options given are: “Thunderbird is now running in safe mode, which temporarily disables your custom setting, themes and extensions. You can make some or all of these changes permanent: > Disable all add-ons > Reset toolbars and Controls “Make changes and Restart” / ” cont. in Safe Mode” / “Exit”