I tried to add PST file in Outlook 2016 but it gets failed. I have faced an Error 0x80004001. For importing I have used these steps:

Control Panel> Mail> Data File> MS Outlook > Add PST file

I have searched this query over lots of sites and found few references.

https://forums.overclockers.co.uk/threads/fatal-error-80040900-in-ms-outlook.18833446/

https://www.stellarservertools.com/ost-pst-converter.php

Please suggest which reference is best for me.