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Summary: Do you use Thunderbird, and are not able to figure out why your ImportExportTools NG is greyed out? There could be any reason, like a network problem, an add-in incompatibility, or incorrect settings. In this blog, we will discuss various methods to fix Thunderbird ImportExportTools NG Not Working Error.

Several users still prefer Thunderbird as their primary email client as it is open-source and can be installed on Windows, Mac, or Linux systems. Thunderbird supports a wide range of Add-ins that helps users to perform day to day communication in a better way. One such Add-in is ImportExportTools NG that helps users to import or export mailbox data. Many times, the user is not able to use Import/ExportTools NG, and it becomes impossible for users to export email data.

It can happen due to large email data, improper folder structure, application incompatibility, antivirus conflicts, or an outdated Thunderbird application. Users have to fix Thunderbird ImportExportTools NG Not Working Error on an urgent basis to be able to import or export emails to Thunderbird again.

Simple Methods to Fix Thunderbird ImportExportTools NG Not Working Error

Users can follow the best troubleshooting methods to fix ImportExportTools NG errors. With the use of these quick fixes, users can continue importing and exporting emails in Thunderbird.

Fix 1: Check Mozilla Thunderbird Version

Before starting to fix the error, be sure that your Thunderbird is the latest version.

  1. Open Mozilla Thunderbird.
  2. Tap Help > About Thunderbird.
  3. Check the version number.
  4. Visit the official add-ons page to confirm.
  5. If using an older Thunderbird version, then update to the latest version.

A Quick Tip: If the add-on is not compatible with the latest version, downgrade Thunderbird.

Fix 2: Re-install ImportExport NG Add-on in Thunderbird

If Thunderbird ImportExportNG is not working on your PC, then you can reinstall this extension. After the installation, users can fix bugs or corrupted files.

  1. Start Mozilla Thunderbird.
  2. Tap on the Go to Tools > Add-ons or Themes.
  3. Find ImportExportTools NG add-on.
  4. Click Remove or Uninstall the extension.
  5. Restart Thunderbird.
  6. Reinstall Thunderbird Add-ons’ current version.

User Note: Try to see if the issue has been solved after reinstalling.

Fix 3: Start/Run Mozilla Thunderbird in Safe Mode

If the “Thunderbird ImportExportTools NG is not working,” another extension might conflict with the ImportExportNG.

  1. Close Thunderbird properly.
  2. Restart Thunderbird in Safe Mode.
  3. Hold Shift (Windows) or Option (Mac) while launching Thunderbird.
  4. In Safe Mode, try importing/exporting using the ImportExportTools NG add-on.
  5. If this tactic works, disable conflicting add-ons by clicking on the Add-ons Manager > Extensions.

Fix 4: Allow MBOX File Support in Mozilla Thunderbird

Confirm that Thunderbird supports the MBOX format if you want to import MBOX files and the Thunderbird ImportExportToolsNG isn’t working.

  1. Open Mozilla Thunderbird.
  2. Tap on the Tools > Account Settings.
  3. Under the email account, choose the select Server Settings.
  4. Make sure the option ‘Use Local Folders’ is enabled.
  5. After that, retry importing the MBOX file by using ImportExportTools NG.

Fix 5: Check Windows 11 Compatibility

Many users face the issue that “Thunderbird ImportExportTools NG is not working on Windows 11”. Users can use the compatibility settings in Thunderbird. If you are still seeing this type of issue.

  1. Right-click on the Thunderbird shortcut.
  2. Choose Properties > Compatibility tab.
  3. Make sure to run this program in compatibility mode.
  4. Pick Windows 7 or Windows XP.
  5. Click Apply
  6. After all steps, Restart Thunderbird.

Fix 6: Import MBOX Files in Thunderbird Manually

In case ImportExportTools NG fails to work for MBOX import, consider manually transferring MBOX files into your profile folder of Thunderbird.

  • Close Thunderbird.
  • Go to Thunderbird’s profile location:
    Windows: C:\Users\[Your Name]\AppData\Roaming\Thunderbird\Profiles\[Profile Name]\Mail\Local Folders

    Mac: ~/Library/Thunderbird/Profiles/[Profile Name]/Mail/Local Folders

  • Copy the MBOX file into this folder.
  • Restart Thunderbird.
  • The MBOX file should now be visible in Local Folders.

Expert Quick Fix: Try BLR MBOX Converter

If the above methods do not fix Thunderbird ImportExportTools NG Not Working Error, then you can use a professional tool to export MBOX files from Thunderbird. BLR MBOX Converter software can export data directly from the Thunderbird profile with the Load Thunderbird option provided in the software. Most importantly, using this software, you can export Thunderbird emails to PST, PDF, CSV, EML, and many other file formats.

download-free-software

Download the free version of this tool and analyse the conversion process.

Conclusion

Thunderbird’s Import/Export Tools NG is an important Add-in that is used for exporting or importing mailbox data. Therefore, it is important to fix Thunderbird ImportExportTools NG Not Working error for cross-platform compatibility. In this blog, we have mentioned various methods to fix Thunderbird errors. The manual methods are complex and time-consuming, while the Automated solution is secure and instant.

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