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  1. answers.microsoft.com › en-us › outlook_comMicrosoft 365 Outlook will not open - Microsoft Community

    Dec 5, 2021 · In the View and manage Microsoft Office add-ons option, go to the Manage option and select the COM add-ins option and click the GO button. 5. In the COM Add-in window, deselect all available Add-ins and click OK. 6. Close Outlook in Safe Mode, start Outlook normally and check to see if the problem persists.

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  3. support.microsoft.com › en-gb › officeTroubleshoot Outlook for Windows issues - Microsoft Support

    • Overview
    • Uninstall and reinstall the new Outlook for Windows
    • Does Outlook stop running or refuse to start?
    • Is Outlook frozen?
    • Do you see the message "This set of folders could not be opened"?

    If you are having problems with Outlook, there are a few things we can help with to get you back to sending and receiving your email.

    For information on emerging or known Outlook issues, go to Fixes or workarounds for recent issues in Outlook for PC.

    1.Right-click Start and select Task Manager.

    2.Select Microsoft Outlook, then End task.

    3.Check to make sure that new Outlook is closed, then close Task Manager.

    4.After new Outlook closes, reopen the app as you normally would.

    See full list on support.microsoft.com

    To uninstall new Outlook:

    1.From the Start menu, select new Outlook for Windows.

    2.Select the arrow to expand the list option in Start.

    3.Select Uninstall to begin the uninstall process.

    To reinstall new Outlook:

    1.Open classic Outlook for Windows.

    See full list on support.microsoft.com

    If you can't open Outlook, or Outlook disappears or crashes, one of your add-ins may be to blame or you may need to update Outlook.

    You might need to set Windows Update to automatically download and install recommended updates. Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities. To install the latest Windows and Office updates, click the link below.

    Keep Windows up to date with the latest Updates

    Did that work? Great. If not, you can contact support.

    You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally.

    1.In Windows 10, click Start.

    See full list on support.microsoft.com

    If you can't choose any of the menu options, type inside an email message, calendar event, or contact, Outlook may have frozen. There are three steps you can take to try to get Outlook working again.

    Occasionally, Outlook tries to run a process in the background. Auto-archive, sending and receiving a very large attachment, or running some of the other mailbox tools can all be done in the background. Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three minutes) to see if Outlook starts working again.

    See full list on support.microsoft.com

    If you can't open a particular set of folders, you can try to repair your personal folders file or create a new profile.

    Try following the steps outlined here to create a new profile:

    Create an Outlook profile

    Did that work? Great. If not, you can contact support.

    Try following the steps outlined here to repair your .pst file:

    Repair Outlook Data Files (.pst and .ost)

    See full list on support.microsoft.com

  4. support.microsoft.com › en-us › officeFix your Outlook email connection by repairing your profile

    In Outlook 2016, choose File. Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair. Note: The Repair option isn't available if you're using Outlook 2016 to connect to an Exchange account. Follow the prompts in the wizard, and when you’re done, restart Outlook.

  5. answers.microsoft.com › en-us › outlook_comWhy can't I use the new Outlook with my Microsoft 365 account?

    May 23, 2024 · Hello Nina OFF Thanks for reaching out to the Microsoft Community. We are happy to assist you. I'm sorry to know that you're having trouble using the new Outlook with your Microsoft 365 account. To better understand and narrow down the matter, please provide more information so that we can work togeth

  6. answers.microsoft.com › en-us › outlook_comUnable to login via Outlook desktop app but online works

    Apr 17, 2022 · Go to the credential manager using [Windows key -> "CMD" -> enter -> "control keymgr.dll" -> enter] or. [Open the classic control panel -> click on "credential manager"] Then click on "windows credentials" and search for the office logins and remove them. After that I removed the whole office pallet completely.

  7. learn.microsoft.com › outlook-connection-issuesFix Outlook connection problems in Microsoft 365 - Exchange

    Run Tests: Outlook User Connectivity. Check for service issues. Admin only: If more than one person in your organization is experiencing email problems in Microsoft 365, it could be due to a problem with the service. Go to the Microsoft 365 Service health status (admin sign in required), and check the status of the services under Exchange Online.

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  9. support.microsoft.com › en-gb › topicFix Outlook account problems in Office 365 for business

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