new outlook not importing all emails from old outlook

Question

new outlook not importing all emails from old outlook

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Moved from Microsoft 365 and Office | Other

Answer 1

Hi Paul Nicolas

I hope you are doing well ! I just want to check if you have had a chance to test the steps earlier? Please let me know if they helped resolve the issue or if you are still experiencing any difficulties. I am here to assist you further.

Best Regards

Answer 2

Dear Paul Nicolas

Thank you for reaching out to the Microsoft Q&A forum. I understand you are having problem with new outlook not importing all emails from old outlook - Microsoft Q&A in New Outlook for Windows (For home). Please:  

1. Confirm whether your missing mail is server-synced or local-only. If your “old Outlook” mail exists only in a local Outlook Data File (.pst) (common with POP/archives), new Outlook will not import that mailbox content from a .pst. Importing a mailbox or calendar using a .pst file is currently not supported in new Outlook and requires switching back to classic Outlook. Sign in to your mailbox on the web (Outlook.com / provider webmail). If the missing messages are visible there, the issue is sync/configuration in the new client. If they are not visible there but exist in a .pst in classic Outlook, use step 2.  
2. If the missing emails are in a .pst or “local folders”, use classic Outlook to bring them over. Switch to classic Outlook and use the supported export/import (.pst) workflow in classic Outlook, because new Outlook does not support importing mailboxes from .pst currently. You can continue using classic Outlook for the local history while using new Outlook for current mail, if needed (you can switch back by turning off the new Outlook toggle). 
3. If your account is Exchange/Outlook.com/IMAP and mail is on the server, re-trigger the new Outlook setup and settings migration. New Outlook imports classic Outlook settings automatically only when “Store my Outlook settings in the cloud (requires restarting Outlook)” is enabled in classic Outlook. In classic Outlook: enable “Store my Outlook settings in the cloud (requires restarting Outlook)” then restart classic Outlook.  In new Outlook: go to Settings > Accounts > Your accounts, select Manage next to the primary account, and choose Get Started to try migrating again. 
4. Refresh the new Outlook installation if the account setup is incomplete or stuck. Please try uninstalling and reinstalling the new Outlook app, and reinstalling it via the “Try the new Outlook” toggle in classic Outlook (or Microsoft Store if applicable). 

If all steps fail: 

• Visit Contact - Microsoft Support     
• Type a brief description of your issue in the search box    
• Scroll down to the bottom > select Sign in to contact support    
• Log in to your personal Microsoft account.     
• Under Products & Services, select "Other Products"; Under Categories, select a suitable Category.   
• Click "Chat with a support agent in your web browser" (during business hours) 

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Answer 3

If you are experiencing issues with the new Outlook not importing all emails from the old Outlook, it's important to ensure that you are using the correct file format and method for the import process. Here are some steps you can follow:

1. Check File Format: Ensure that you are importing from a .pst file, as the new Outlook may not support other formats. If you have an .olm file from Outlook for Mac, note that it cannot be directly imported into Outlook for Windows.
2. Use the Correct Import Method: To import emails from an old Outlook profile, you should use the following steps:
   • Open Outlook and go to File > Open & Export > Import/Export.
   • Select Import from another program or file and choose Outlook Data File (.pst).
   • Follow the prompts to locate and import your .pst file.
3. Check for Filters: During the import process, ensure that there are no filters applied that might limit the emails being imported.
4. Repair the PST File: If the .pst file is corrupted, it may not import all emails. You can use the Inbox Repair Tool (Scanpst.exe) to repair the file before attempting to import it again.
5. Synchronize with Exchange Server: If your old emails were on an Exchange Server, ensure that the new Outlook is connected to the same account to access those emails directly.

If you continue to have issues, consider checking for updates to Outlook or consulting Microsoft support for further assistance.

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References:

• Can't import .olm files from Outlook for Mac to Outlook for Windows
• How do I recover my old email messages, my contacts and everything else I had in Outlook? - Microsoft Q&A