A Microsoft file hosting and synchronization service.
Hi JSMasagca:
It is not recommended to store pst-files within Cloud based storage folders like OneDrive.
Due to the size of and the file lock on a pst-file when Outlook is running, synchronizing a pst-file with cloud based storage will result in pretty much a never-ending synchronization cycle and could result in data corruption and even data loss.
Best thing to keep in mind; OneDrive is the cloud solution for files, not emails. When you only want to archive a few emails to OneDrive , you can do so by simply dragging the messages out of Outlook and into the OneDrivefolder on your computer.
More information for you to reference:Archiving emails to OneDrive or other Cloud storage - MSOutlook.info
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Best regards,
Tin