Once again, click Default-Programs window for opening it.
Or click some other data item that is wanted for import.
And now, following of same steps are needed again.
This imports the data from Outlook 2016 to Thunderbird.
From the options that are provided, you need to choose Outlook.
Here, click radio button which is present right next to that.
And then, click on of Set-this-Program-as-default.
Here, Outlook’s option needs to be chosen.
After that, you have to select “Set-your-default-program”.
Steps mentioned below would even export Outlook to Thunderbird: Using the exportation steps given underneath, one can migrate PST to Thunderbird. Usually, when an issue occurs, the first thing the users would like to try is the manual methods. How to Convert Outlook Data Files to MBOX Format Manually This will allow you to export Outlook PST file to MBOX format that can be imported into Thunderbird. Quick Solution: If you want to quickly transfer Outlook emails to Thunderbird, then you can use Outlook to MBOX Converter Tool.