Compatibility mode is suitable for older software with Windows 10 that fail to run normally. Thankfully, Microsoft Outlook is fully optimized for Windows 10, meaning Compatibility mode is not necessary. You might be wondering what happens when you switch on the Compatibility mode for Outlook. For this reason, you should always turn off Compatibility mode for Outlook. If you do everything properly, Outlook will open when you use the new profile. This goes to prove that the problem came from your original Outlook profile.

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.

It is a powerful and almighty software that can be applied to fix corrupt Outlook PST files in any scenarios. If you restart it successfully, it will show you that one or more add-ins are defective. Sometimes, extra tools, ‘add-ins’ in Outlook, can make things tricky.

They’re like helpful accessories, but sometimes they can cause trouble. To troubleshoot the "Outlook Won’t Open in Windows 10" error, try these solutions. You can start Outlook in safe mode, disable your add-ins, and then try to open Outlook normally. If you are figuring out how to fix "Outlook Not Opening," you will find several possible solutions. The best part is that you are spoiled for choice because some are quick to implement while others are time-consuming.

Solutions to Troubleshoot 'Out of Memory or System Resources' ErrorCheck Resource Usage. ...Restart and Update Outlook. ...Optimize System Resources for Outlook. ...Find and Remove Faulty Add-ins from Outlook. ...Increase the Size of the Memory Heap. ...Rebuild the OST File.Apr 7, 2025

Get Help has troubleshooters for Fix Outlook Support classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems. These often help resolve issues without the need to contact support. The issues documented in this section have been reported after installing the recent updates listed below. We're investigating the issues and will update this page when a fix is available.

Select a contact or contact list to view details in Fix Outlook Support the contact card on the right. You can also select multiple contacts—for example, to send an email to the selected contacts. Microsoft has its own tool for automatically scanning and correcting Office when things go awry.

So, we have produced this Fix Outlook Support list of general things to try to resolve your problem in Outlook. Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. To import contacts from other email services, export contacts, or clean up duplicate contacts, select an option from the Manage contacts menu. Use the People page to find, view, create, and edit contacts and contact lists. To learn more about managing contacts in Outlook.com, go to Create, view, and edit contacts and contact lists in Outlook.com.

If you are having issues sending email, this might be due to validation issues with your Microsoft Account. We're aware of an issue where some users see the error message "Your message can't be displayed right now". Microsoft has released a Windows Hotfix file to remove the contacts folder synced by the Teams app. 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 retained and only contacts with matching information in all fields will be cleaned up. To check if you have received the fix, review your contact list to confirm duplicates have been removed.

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. We are aware that some users may not be able to receive email from Gmail accounts.

There might also be a visual alert that a message is unread, has an attachment, or is flagged. In the Search box, type the name or email address of a person or a keyword you want to search for, and press Enter or select . This is a lightweight app designed to handle multiple accounts and fairly moderate email use. After you run any troubleshooter, Get Help provides details on any findings and suggestions for possible remedies. If one of these resolves your problem, close the app and continue working.

To get help and troubleshoot other Microsoft products and services, enter your problem here. To get support in Outlook.com, click here or select Help on the menu bar and enter your Fix Outlook Support query. If the self-help doesn't solve your problem, scroll down to Still need help?