How to fix Mozilla Thunderbird issues on Windows 10

By: Milan Stanojevic
4 minute read

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In our webmail vs desktop email client article, we mentioned that using desktop email clients has its benefits. Speaking of desktop email clients, one of the most popular email clients for Windows 10 is Thunderbird, but according to users, Thunderbird has its share of issues on Windows 10, and today we’re going to address some of these issues.

Thunderbird issues on Windows 10

Solution 1 – Update Thunderbird

Quite often issues with Thunderbird on Windows 10 can occur due to outdated version of Thunderbird. In order to fix most Thunderbird issues, it’s always good to use the latest version of Thunderbird on Windows 10 in order to avoid any potential incompatibility issues.

Solution 2 – Run Thunderbird from Safe Mode

According to users, Thunderbird hangs on their Windows 10 PC while trying to perform a certain action, and this can be caused by any third-party application. In order to fix this issue, some users are suggesting to start Thunderbird from Safe Mode. To do that follow these steps:

  1. Click the Start button.
  2. Now click the Power button, press and hold Shift on your keyboard and choose Restart from the menu.
    restart
  3. Once your computer restarts, you should see Advanced boot screen. Choose Troubleshoot > Advanced options > Startup Settings and click the Restart button.
  4. When your computer restarts again, press F5 to choose Safe Mode with Networking.
  5. After entering the Safe Mode start Thunderbird. If Thunderbird is working normally in Safe Mode, issue is most likely caused by a third-party application that is installed on your PC, and in order to fix Thunderbird you’ll need to find the problematic application on your PC and disable/uninstall it.

Solution 3 – Disable Thunderbird add-ons

Sometimes issues with Thunderbird can be caused by third-party add-ons that you have installed. Easiest way to check if certain add-on is causing issues with Thunderbird is to start Thunderbird Safe Mode. To do that, do the following:

  1. Press and hold Shift on your keyboard and run Thunderbird.
  2. You should see Thunderbird Safe Mode window. Check Disable all add-ons and click Continue in Safe Mode.
    thunderbird-safe-mode
  3. Optional: If the previous method isn’t working for you, you can always enter Safe Mode by starting Thunderbird normally and clicking the Menu icon in the top right and choosing Help >Restart with Add-ons Disabled.
    restart-with-addons-disabled

If you have resolved Thunderbird issues by entering the Safe Mode, then your issue is most likely caused by a Thunderbird extensions, and in order to fix the issue you’ll have to disable/remove problematic extensions. To do that, follow these steps:


For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

  1. Start Thunderbird.
  2. Click Menu button in the top right corner and choose Add-ons.
  3. Now select Extensions tab on the left.
  4. You should see a list of available extensions. Click Disable next to each extension in order to disable it.
  5. Now enable extensions one by one until you find the one that is causing you problems.

Quick solution to fix various PC issues

  • Step 1: Download this PC Scan & Repair tool
  • Step 2: Click “Start Scan” to find Windows issues that could be causing errors with Thunderbird in Windows 10
  • Step 3: Click “Start Repair” to fix all issues.

Solution 4 – Disable your antivirus

As we previously mentioned, issues with Thunderbird can be caused by your antivirus software, most commonly Avira, Avast and Norton. If you’re using any of these tools, we suggest that you try disabling them to see if that solves the issue. If disabling your antivirus doesn’t solve the issue, you might have to uninstall your antivirus completely and switch to a different one. We already wrote about the best antivirus software for Windows 10, so if you’re looking for a new security software, make sure you check it out.

Solution 5 – Run Thunderbird in compatibility mode

In order to fix issues with Thunderbird, sometimes it’s best that you run it in compatibility mode. To do that, follow these steps:

  1. Find Thunderbird’s shortcut and right click it. Choose Properties from the menu.
    open-properties
  2. Navigate to Compatibility tab and check Run this program in compatibility mode for.
  3. Select one of the older versions of Windows from the list, for example Windows 7 or Windows XP.
    compatibility-mode
  4. Click Apply and OK to save changes.

Solution 6 – Run CCleaner

Users reported that they have successfully fixed the issues with Thunderbird on Windows 10 after running CCleaner. Bear in mind that CCleaner can sometimes remove important files from your PC, so use it carefully.

We also recommend you to download this tool (100% safe and tested by us) to fix  various PC problems, such as missing or corrupted files, malware and hardware failure.

Thunderbird issues on Windows 10 are most often caused by a third-party application or by a Thunderbird extension, and you can easily fix most of Thunderbird issues by following our solutions. We also did a comparison between Thunderbird and OE Classic, so if you can’t fix problems with Thunderbird, you might want to switch to OE Classic.

For various PC problems, we recommend this tool.

This software will repair common computer errors, protect you from file loss, malware, hardware failure and optimize your PC for maximum performance. Fix PC issues now in 3 easy steps:

  1. Download this PC Repair Tool rated "Excellent" on TrustPilot.com.
  2. Click “Start Scan” to find Windows issues that could be causing PC problems.
  3. Click “Repair All” to fix all issues with Patended Technologies (requires upgrade).

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