Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi Sarah Henderson,
The .pst file cannot be opened directly in OneDrive. OneDrive only stores or syncs the file, while the email content must be opened through classic Outlook.
Before moving or repairing anything, right-click the .pst file in File Explorer and select Always keep on this device. Wait until the file shows a solid green check mark, then close Outlook and pause OneDrive syncing. Try copying the file to a local folder outside OneDrive, such as C:\Outlook Backup, and open that local copy from Outlook > File > Open & Export > Open Outlook Data File.
Please keep the original OneDrive file unchanged until you confirm that the local copy opens correctly. If the file remains stuck on Sync pending and cannot be copied or downloaded after a week, the OneDrive sync issue will need to be resolved first. In that case, contact Microsoft Support and ask them to help recover or download the affected .pst file before attempting further repairs. Thank you so much for your understanding.
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