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Microsoft outlook windows 11

Stephen Moore 0 Reputation points
2026-01-22T18:16:11.38+00:00

Why does my outlook keep freezing???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

Microsoft 365 and Office | Loop | For home
Microsoft 365 and Office | Loop | For home

A collaborative workspace app in Microsoft 365 designed to help teams co-create, stay organized, and work together in real time across apps and devices.

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  1. John Jefferson Doyon 71,160 Reputation points Independent Advisor
    2026-01-22T19:19:35.63+00:00

    Hi, I'm John! I will help you with this.

    To help narrow down the issue:

    1. What specific error messages are you encountering?
    2. Are you using Outlook Classic from Microsoft 365 or a stand-alone Outlook version (like Outlook 2019/2021)?
    3. Does Outlook freeze immediately when opening, or only after a few minutes?

    In the meantime, a quick thing you can try is opening Outlook in Safe Mode (this helps check if an add-in is causing the issue):

    • Press Windows key + R.
    • Type outlook.exe /safe and press Enter
    • If it opens normally in Safe Mode, the issue is very likely caused by an add-in.

    Click "Add comment" to let me know.

    Regards,

    John J.D.

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  2. AI answer

    2026-01-22T18:16:49.4966667+00:00

    There are several reasons why Outlook might keep freezing on Windows 11. Here are some potential causes and solutions:

    1. Antivirus Software Integration: If your antivirus software integrates with Outlook, it may cause performance issues. You can try disabling this integration or any antivirus add-ins in Outlook. However, be cautious as changing antivirus settings can make your PC vulnerable to threats.
    2. Large Mailbox Size: If your mailbox size is large, it may require more resources to open folders, leading to performance issues. Consider moving items from larger folders to separate folders or using the AutoArchive feature to manage your mailbox size.
    3. AppData Folder Redirection: If your AppData folder is redirected to a network location, slow network performance can cause Outlook to freeze. You may need to disable this redirection.
    4. Selective Startup: Performing a selective startup can help identify if background applications or services are interfering with Outlook. This is an advanced step and may require some technical knowledge.
    5. PST Files on Cloud Storage: If your PST files are stored on cloud services like OneDrive, this may cause Outlook to become unresponsive. Moving the PST files out of OneDrive can help resolve this issue.

    If these solutions do not resolve the freezing issue, consider reaching out to Microsoft Support for further assistance.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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