- Problems sending Mozilla Thunderbird emails – This problem may occur if your email account is not configured correctly. To fix this, make sure your registration information is correct.
- Mozilla Thunderbird is very slow. Many users have reported this problem, but we’ve already covered it in detail in our Thunderbird is Slow article, so check that for other solutions.
- Mozilla Thunderbird does not download email – this problem can sometimes be caused by your antivirus program, and you may need to disable or uninstall your antivirus program to fix it.
- Mozilla Thunderbird constantly crashes, becomes unresponsive, freezes, hangs – these are just a few of the different problems that can occur with Thunderbird, but you should be able to solve them with our solutions.
Quick tip: Before you continue troubleshooting Thunderbird, consider bypassing the problem and trying another email program.
The solution recommended below is very popular because of its clean, user-friendly interface and, most importantly, it has no bugs.⇒ Get Mailbird
1. Updating Thunderbird
Often problems with Thunderbird on Windows 10 can be due to an outdated version of Thunderbird. To fix most Thunderbird issues, it is always best to use the latest version of Thunderbird on Windows 10 to avoid any possible incompatibility issues.
2. Starting Thunderbird in safe mode
According to users, Thunderbird crashes on a Windows 10 computer when you try to perform a certain action, and this can be caused by any third-party application. To resolve this issue, some users recommend starting Thunderbird in Safe Mode. Follow the steps below to do this:
- Open the Settings application. This can be done with the Windows + I hotkey.
- Now go to Updates and Security.
- Select Restore in the left pane. Select the Restart Now button from the right pane.
- A list of options appears. Go to Troubleshooting > Advanced Settings > Startup Settings. Click on the Restart button.
- You should now see a list of options. Press the appropriate key on the keyboard to select the desired Safe Mode version.
After switching to safe mode, start Thunderbird. If Thunderbird works fine in Safe Mode, the problem is probably caused by a third-party application installed on your PC. To fix Thunderbird, you need to find the problematic application on your PC and deactivate/remove it.
3. Disable Thunderbird plug-ins
Sometimes problems with Thunderbird can be caused by third-party add-ons that you have installed. The easiest way to check if a particular add-on is causing problems with Thunderbird is to run Thunderbird in Safe Mode. Proceed as follows:
- Hold down the Shift key on your keyboard and launch Thunderbird.
- You should see the Thunderbird Safe Mode window. Select the Disable all add-ons check box and click Continue in safe mode.
- Not necessary: If the above method does not work, you can always switch to Safe Mode by starting Thunderbird normally and clicking on the menu icon in the top right corner and choosing Help > Restart with Add-ons Disabled.
If you have solved your Thunderbird problems by switching to Safe Mode, it is likely that your problem is related to Thunderbird extensions and you need to disable/remove the problematic extensions to solve the problem. Follow the steps below to do this:
- Start Thunderbird.
- Click on the Menu button in the upper right corner and select Add.
- Now click on the Extensions tab on the left.
- You should see a list of available extensions. Click the Disable button next to each extension to disable it.
- Now activate the extensions one by one until you find the one that is giving you problems.
4. Reinstalling Thunderbird
Sometimes you can have problems with Thunderbird if your Thunderbird installation is corrupt. In most cases, this problem can be solved by simply reinstalling Thunderbird, so you can try. There are several ways to uninstall an application, and while uninstalling Thunderbird via Preferences is the easiest method, you should know that this method is not always effective.
Sometimes applications can leave certain files or registry entries behind even after they are deleted. This can be a problem because these files can cause problems in the future, so it is recommended to delete them. This can be a tedious task, so it is best to use a special tool that will do this for you. A professional removal utility will remove the software and all its remnants, so that it cannot affect your system and cause errors.
The third-party uninstaller also removes all files and registry entries associated with this application. After uninstalling Thunderbird with such a tool, reinstall it and the problem should be completely solved.
Run a system check for errors
Press Start Scan to find problems with Windows.
Press Repair Everything to fix problems with proprietary technologies.
Run a PC scan with Restoro Repair Tool to find errors that cause security problems and slowdowns. Once the scan is complete, the repair process replaces the damaged files with new files and Windows components.
⇒ Get IObit Uninstaller Pro.
5. Check if your mailbox is configured correctly
A common problem with Thunderbird is the inability to receive email. This can happen for a number of reasons, but the most likely reason is an incorrect configuration of your email account in Thunderbird. However, this problem can be easily solved by following the steps below:
frequently asked questions
Why is Thunderbird not working?
Fix, fix, fail…
Does Thunderbird email work with Windows 10?
Windows Forum by en-us
Why does Mozilla Thunderbird crash all the time?
Thunderbird cataclysms in the US
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