Add 'Outlook performance is slow in Microsoft 365 Outlook Microsoft Learn'

Outlook-performance-is-slow-in-Microsoft-365-Outlook-Microsoft-Learn.md

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+You can read about it and then run the Microsoft Support and Recovery Assistant to see if that helps. It can automatically diagnose issues, troubleshoot, and fix problems with Outlook. A more general version that can also fix Office, Microsoft 365, and other Outlook problems can be found here.
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+We are dedicated to providing a clean, user-friendly, email software that is easy to personalize to your workflow. The steps to access the repair tool vary depending on your operating system. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. We have recently received some reports of users who are experiencing issues with subscribing to .ics/ical calendars. This fix will also lead to a reduction in the total number of contacts on your contact list. We will ensure that all information is resolving Outlook not responding retained and only contacts with matching information in all fields will be cleaned up.
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+Although add-ins can enhance your user experience, they can occasionally interfere or conflict with Outlook. Make sure that the latest updates for Outlook are installed. For more information, see How to install the latest applicable updates for Microsoft Outlook (US English only).
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+Learn how to get more out of your connection with Outlook.com. We've streamlined search to make it easier than ever to find what you're looking for. The new Outlook Attachment Preview feature lets you see your pictures and files without leaving your inbox.
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+At the top of the message list, you can choose how you want to view the list. See Working with message folders in Outlook.com to learn more about available folders. This resolving Outlook not responding article describes how to set up multi-factor authentication (MFA) for Office 365 users.
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+Microsoft created a support and recovery assistant. This program is designed to run some tests, provide a diagnostic, and help you fix common issues with your Outlook account. If calling people on the phone is not your preferred option, you can contact Outlook’s customer service via a live chat. Outlook Safe Mode support refers to the resources and assistance Microsoft provides for users who encounter issues while using Outlook in Safe Mode. Overall, Outlook webmail support provides a [resolving Outlook not responding](https://office365emailfix.blogspot.com/2025/10/fix-outlook-not-sending-or-receiving.html) comprehensive system to help you troubleshoot problems and effectively use the web-based version of Outlook for managing your email and schedule.
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+If so, wait a short time (usually resolving Outlook not responding two or three minutes) to see if Outlook starts working again. 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. See and manage the tasks in the selected list from this window. Right-click a task for a list of options, or select a task to see and manage its details. Shows contacts or contact lists depending on what you selected in the left pane.
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+To install the latest Windows and Office updates, click the link below. See and manage the tasks in the selected list from this window. Right-click a task for a list of options, or select a task to see and manage its details. Shows contacts or contact lists depending on what you selected in the left pane. Select a contact or contact list to view details in the contact card on the right. You can also select multiple contacts—for example, to send an email to the selected contacts.
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+Keep track of appointments, meetings, or any other event from anywhere. Add, edit, or delete events using daily, weekly, or monthly views. For more information about working with calendars in Outlook.com, go to Using the calendar in Outlook.com. Get Help has troubleshooters you can run for many common scenarios. These often help resolve issues without the resolving Outlook not responding need to contact support.
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+While we fix the problem, you can send the file as a OneDrive link. When users select the Manage Microsoft Storage quota link at the bottom corner in Outlook.com, they are taken to a blank Settings page. 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 can check the location of your Outlook Data Files in Outlook. Gmail has a positive reputation when it comes to spam filtering.
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+In the meantime, please use the workarounds suggested for each issue. To edit a shared calendar, go online to your own Outlook.com calendar, open Calendar for Windows 10, or use a mobile device. Read how to Add your Outlook.com account to another mail app. This occurs because custom form script is now disabled by default. To determine the cause of the performance issues, start the Assistant, and run the Outlook Diagnostic in the Advanced Diagnostics section. Serious problems might occur if you modify the registry incorrectly.
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+Our 9 working solutions will help you fix resolving Outlook not responding the "Outlook Not Responding" issue and bring your Outlook back to life. The solutions work for Outlook 365, 2021, 2019, 2016, 2013, and earlier versions. If installing the latest updates didn't resolve your issue, move on to the next step. If you try to delete or move a large number of messages at once, Outlook can appear to freeze, but really, it's working behind the scenes. If Outlook is performing some operation on hundreds or thousands of messages at once, it might appear to be stuck.