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ayakaku216's avatar
ayakaku216
Copper Contributor
Sep 11, 2026

[Outlook App] Junk Email folder keeps having junk nonstop

This happened to my Outlook desktop app lately. https://drive.proton.me/urls/B9GJAD5734#0XPeps9Wrut1 does not look normal. What is the issue?  My Outlook Web does not have the same problem.

*edit: I recorded it again when I emptied the junk email (the icon indicating loading circles) folder and the number in junk email goes up exponentially.
https://drive.proton.me/urls/H8355192BM#BmI1SceFACI8

3 Replies

  • KateC's avatar
    KateC
    Copper Contributor

    I recently renewed my subscription and since then, I receive endless amounts of junk emails - more than 20 a day. It's really frustrating. Microsoft, please do something about this.

  • The difference between Outlook on the web and the desktop app is important: it suggests the mailbox may be correct on the server while the desktop client is displaying a local synchronization or view problem. Do not assume every rising Junk count represents newly delivered mail. First note whether the message list itself duplicates, whether the count changes after Send/Receive, and whether Outlook’s Sync Issues folder records an error. Confirm whether this is classic Outlook or new Outlook, because Cached Exchange Mode applies only to classic Outlook. For a Microsoft 365 or Exchange mailbox in classic Outlook, verify that Cached Exchange Mode is enabled, restart Outlook, and let the folder finish synchronizing before repeatedly emptying it. If it continues, capture the exact account type, Outlook version, folder count, and any Sync Issues error for Microsoft support. Avoid opening or interacting with suspicious messages merely to test the behavior; use Outlook on the web temporarily if it remains accurate.

  • ayakaku216's avatar
    ayakaku216
    Copper Contributor

    *edit: Outlook Web intermittently experiences the same problem.