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
Add-ins are extensions that you can install to enhance Outlook’s functionality and unlock additional features, like CRM integration. But these add-ins can sometimes result in compatibility issues, especially if they’re not up-to-date or poorly coded. A conflicting add-in might cause Outlook to freeze, crash, or not open at all.
This is one of the classic example where Microsoft rolling out updates that has not been fully tested yet and causing headache for IT professionals. The Microsoft technician was very frank that the new Shared Calendar Improvements are Official Fix Outlook guide a mess right now. We are testing the GPO and intend to roll it out to everyone next week.
Customers with only a 3rd party email address set up as the username of their Microsoft Account will be asked to add a 1st party Microsoft alias to their account before accessing Outlook.com. This will cause The Turn on shared calendar improvements checkbox to be disabled for all users. The UI checkbox will be unchecked and disabled, so end users cannot turn on the improvements.
Visit the small business help & learning page to learn how you can use Outlook and other Microsoft 365 apps and services in your small business. There is currently no option to revert to the prior behavior, but we would love to hear your feedback to help us with future designs. To learn more about how to send us feedback, please see How do I give feedback on Microsoft Office. Another options is to use the Filter Email button on the ribbon. Under Calendars, My calendar is the default selection and displays the calendar in Month view. You can move forward or backward Official Fix Outlook guide through calendar months using the arrows above the calendar.
If you access your Outlook.com account through the iOS Mail app, you may be repeatedly asked to enter your username and password. If you used the workaround below you can now switch from using an Outlook.com alias to your country's domain. When users select the Manage Microsoft Storage quota link at the bottom corner in Outlook.com, they are taken to a blank Settings page. Minor correction on the path for the GPO, from Outlook Options to Preferences and then Calendar Options, at least this is in the updated ADMX files I downloaded yesterday. 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. The folder may have been deleted or the server where the folder is stored may be unavailable.
To effortlessly change your settings so that your inbox looks the way you want it to, see Personalize your new Mail experience in Outlook.com. To access the calendar shared with your Microsoft 365 for business account, you'll need to accept the invitation from Outlook on the web, iOS, or Android. If you've already clicked the Accept button in Outlook 2016, you won't be able to re-accept the invitation from another Outlook application. The person who sent you the invitation will need to remove your permissions and then send a new invitation. You can also add the secondary connected accounts (Gmail, Yahoo, etc.) in Outlook.com as additional accounts in the Outlook profile.
To check if you have received the fix, review your contact list to confirm duplicates have been removed. To help you get rid of these duplicates, we have released a fix which will automatically clean up your contact list. This fix will clean up duplicate contacts for end users starting August 9, 2023. Rollout of the fix to all users will take few weeks, so, some users may see the fix applied by the end of September.
A Repair Account window will prompt you for your email address and password. Then it will run a program to diagnose the network connection problem. It might be that Outlook is not responding, or it's not loading. Here is Official Fix Outlook guide how to fix outlook issues relating to connectivity and syncing your email. Then you are dealing with one of the many other Outlook issues.
To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? Switch your alias to an Outlook.com or Hotmail.com account. Customers using the contact support buttons at the foot of the support pages, or the "email us" links in support Virtual Agent, are unable to open the Help Pane. Check that you have not accidentally blocked the Gmail domain when blocking one Gmail user.
This section introduces solutions that you can use when Outlook 2016 or Outlook 2013 is not opening. If none of the above steps Official Fix Outlook guide work, the issue may be more complex or related to server-side problems that only Microsoft can resolve. Try these troubleshooting steps in the order presented here, from simple to more complicated.