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If Thunderbird starts up without your messages, addresses, passwords and other settings, check whether your data is available in a different profile. This can happen because Thunderbird creates a dedicated profile for each Thunderbird installation starting with Thunderbird version 68.
To recover your Thunderbird data and settings from another profile when Thunderbird is open:
Access the Troubleshooting information window using one of the following procedures:
- Click the menu button
, click and select .
- On the menu bar, click the menu and select .
If the Thunderbird menu bar is not visible, press the key on your keyboard to temporarily make it visible.
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On the Troubleshooting Information page that opens, click the about:profiles link.
This will open the About Profiles page.
This page should list at least one profile and could list many. The profile that Thunderbird is currently using will have this: This is the profile in use and it cannot be deleted.
If you have another profile listed on this page, it may contain your missing profile data. You can click the button to open another Thunderbird window using that profile. If the other profile doesn't contain your missing data, simply close that new window. If it does contain the missing data, you can set it as the profile that Thunderbird will open by default. Click the button for that profile, and Thunderbird will use it automatically the next time you open Thunderbird.
For more information about managing Thunderbird profiles, see Profile Manager - Create and remove Thunderbird profiles.
