Fixes or workarounds for recent issues in classic Outlook for Windows
Each folder will be listed with its size and number of messages. Right-click the folder, and then click Properties to check your permissions for the folder. See the folder owner or your administrator to change your permissions. To access the filtering options faster, add them to your Quick Access Toolbar. Another options is to use the Filter Email button on the ribbon.
For more information about working with calendars in Outlook.com, go to Using the calendar in Outlook.com. Select More to see additional actions—for example, an option to print a message. If you want to learn about printing, see Print attachments received in email messages. 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 Installing any important, recommended, and optional updates can often correct problems by replacing out-of-date files and fixing vulnerabilities.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.
Repeat the process for all the add-ins that were selected earlier and wait until the Outlook crashing problem repeats. Should you decide to remove a profile, back up the data files first. All offline cached content will be deleted when you choose Remove. For more information, see Introduction to Outlook Data Files (.pst and .ost). The steps to access the repair tool vary depending on your operating system.
The problem of "Outlook Not Opening in Windows 10" happens for different reasons. In short, it means that sometimes Outlook doesn’t start or work right. Knowing why this happens is necessary as we can find ways to fix it properly. Occasionally, classic 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.
If you decide you don't want the calendar you created, right-click the calendar and select Remove. To show or hide the Folders list, select Show or Hide the navigation pane. Calendar events can be used for your own personal event, or you can invite others methods to stop Outlook crashing to create an in-person or Teams meeting. To change your Mail settings so your inbox looks and behaves the way you want it to, see Personalize your new Mail experience in Outlook.com. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. Post questions, follow discussions and share your knowledge in the Outlook.com Community.
After October 14, 2025, Microsoft will no longer provide free software updates from Windows Update, technical assistance, or security fixes for Windows 10. Your PC will still work, methods to stop Outlook crashing but we recommend moving to Windows 11.
After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running. In this case, sign in to the Microsoft 365 portal by using your administrator credentials, and then select service health to determine whether other customers are experiencing the same issue. If other customers are experiencing the issue, the issue should end when the service-interrupting event is resolved. If you’d like to share any feedback about this article, please let us know.
In the Folder Pane, you might see a folder named Recovered Personal Folders that contains your default Outlook folders or a Lost and Found folder. Although the repair process might recreate some of the folders, they may be empty. The Lost and Found folder contains any folders and items methods to stop Outlook crashing recovered by the repair tool that Outlook can't place in their original structure. 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.
We're investigating the issue and will update this page when a fix is available. If you're using Outlook 2010, Outlook 2013 or Outlook 2016, uninstall and re-install iCloud to resolve this issue. This issue affects all Outlook versions on Windows 7, Windows 8, Windows 10. A lot of times, a user will click on something by accident and change their view and be unsure of how to get it back. If anyone finds a more permanent solution, I would appreciate it. It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that.
To import contacts from other email services, export contacts, or clean up duplicate contacts, select an option from the Manage contacts menu. Add a contact to your Favorites by selecting a contact in the list, and then selecting Add to favorites. When you add someone as a favorite in People, they'll also show up under Favorites in Mail, and the other way around, provided that the contact has an email address. There might also be a visual alert that a message is unread, has an attachment, or is flagged. This is a lightweight app designed to handle multiple accounts and fairly moderate email use. Having trouble connecting to your email from Outlook on your desktop?