If you experience problems with the 50GB size limit of your local Outlook data file, this fix might help you.
This fix will extend the maximum file size to 75GB, if you need a higher file limit, edit the file and replace the number 75000 with the size you need.
This fix is for Windows operating systems only.
Download and unpack the attachment below in this article.
Double-click on the unpacked file named "Outlook 2016- set max file size 75GB.zip" and do a restart of your workstation.