missing emails on exchange online

Sree 1,971 Reputation points

emails are missing from the user's folder under online archive in OWA and in his new laptop. But we can see all those emails are available in his old laptop.

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Joyce Shen - MSFT 16,646 Reputation points

    Hi @JustinMicheal-7973

    Which archive method are you using, Manual archive, Autoarchive(which we manage them in outlook) or Online archive(which is also called in-place archive, we could enable it through EAC or powershell) for you account?

    Please notice that: AutoArchive is an older Outlook feature that allows automatic moving of old mails to a .pst file. This means that the messages are removed from the server and are harder to find through search. If the hard drive that contains the AutoArchive.pst becomes unusable, these messages are lost. We can find the .pst file location here: in Outlook > File > Options > Advanced > AutoArchive > Autoarchive Settings > the path below 'move old items to'
    C:\Users\YourUserName\Documents\Outlook Files\archive.pst

    AutoArchive in Outlook- Instructions
    If the folder is just like "Archives" below your account, which means you enabled the autoarchive, and it's not synced to other clients.

    However, online archive(In place archive) creates a separate Archive mailbox that works alongside the main mailbox. The Archive Mailbox can be searched just like the main mailbox. For the Archive features in Exchange Online Archiving

    Here are some related links which introduces the different archive methods in detail for your reference:
    About Outlook Archive, Online Archive and AutoArchive

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

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