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Mozilla Thunderbird Not Responding [Fix Issue Instantly]

Any users who use Mozilla Thunderbird, store their important emails and other data stored on them.

And it is not less than a nightmare a time when users need their data and Mozilla Thunderbird not responding.

The sad truth this issue is common among various users of it and users keep searching for ways to repair thunderbird crashes.

Hence if you are also one of them who was looking to fix the issue of Mozilla Thunderbird not responding then this blog is made for you.

Why you should read this article? Because here I’ll mention the effective technique to repair Thunderbird errors. In bonus also suggested the automated tool that helps you to migrate your Thunderbird data.

Now jump to the solution!

Short Note on Mozilla Thunderbird

Mozilla Thunderbird is a completely free email client used for organizing important data items such as emails, news feeds, chats professionally. You can run this program on your desktop and get full access to its features.

And if you like to do some modifications to manage the data more effectively you can install add-ins on your Thunderbird program. This email client comes in different versions for different platforms like Mac, Linux, and Windows.

Since Thunderbird is an email client that works seamlessly there are some things that create interruptions on its working. Just like while running the program Thunderbird crashes on startup and other common Thunderbird errors.

Below is the solution that helps you to come out from this error.

Fixing Issue Mozilla Thunderbird Not Responding

Reason Behind this Issue

As we said above users can enhance their mailing experience by adding add-ins to their Thunderbird program. With time users forget to uninstall the unrequited add-in and you end up with a lot of add-ins.

The problem of “Thunderbird not responding” arises because of faulty add-ins you installed over a period of time.


Now the only solution to fix the Thunderbird crashes is to start the application in a safe mode. Safe mode enables you to open Thunderbird by disabling all the add-ins and you can disable add-ins selectively. After doing this you can compare safe mode with normal mode and verify which add-ins were causing the issue.

Working Method to Run Thunderbird in Safe Mode

  • First, close the Thunderbird application if it was running in the background.
  • Now double on the Thunderbird app by holding the Shift key.
  • After launching it go to help available at the top menu section and click on Restart with Add-ons Disabled.
  • At last hit the restart option.
  • A new dialog box will appear on the screen tap on continue in safe mode. It will start the program in safe mode.

This is the only approach that will help you to resolve Thunderbird won’t open error.

Don’t Want to Face Errors?

By following the above steps you can fix only this Thunderbird opening issue. But what happens if different errors start appearing while running the Thunderbird. To don’t face these problems in the future you can make a decision to shift towards the trusted email client.

And from my experience, the No.1 email client in the market is Microsoft Outlook. And it can be easily operated by any newbie user because of its GUI. It will be definitely a better decision for Thunderbird users to shift towards MS Outlook secured platform.

Here is the Thing you Should Know!

Mozilla Thunderbird uses MBOX file format to save its data and Outlook uses PST format. It is not possible for Outlook to directly accept the MBOX file because it deals with PST files. Here you need to convert the MBOX file of Thunderbird into PST and after that run this PST file on Outlook.

Download Software

Don’t waste your time searching online for the manual ways to convert MBOX to PST. Just go with this secured SysInspire MBOX Converter that converts all data of MBOX files into PST.

Within 3-4 steps you can perform the whole conversion of the MBOX file. Just run the MBOX Converter and select the MBOX file, Click on the convert MBOX button, Select PST as the format you like to convert thunderbird data and you’re done.

Final Words

Still won’t be able to fix common Thunderbird issues? Do you take the decision to migrate towards Microsoft Outlook? Is that the thing then just download the SysInspire MBOX Converter for exporting MBOX file of Thunderbird having all its data into PST.

About SysInspire

SysInspire Software always designed product to help clients relating to Email Conversion, Data Migration, Forensic Tool and many more..

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