Sometimes, Outlook might not work if other Office-related processes are still running. You can end all office-related processes in task manager to ensure a fresh start. Begin by creating a brand-new profile for Outlook and set it up with a POP email account. If it opens successfully, the problem isn’t with Outlook but with the PST file from your previous account, which can be damaged. You must have at least three user accounts on the computer to complete these steps. If your antivirus software isn't up-to-date, Outlook may not function correctly.
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 Outlook troubleshooting guide query. If the self-help doesn't solve your problem, scroll down to Still need help?
To learn more about how to send us feedback, please see How do I give feedback on Microsoft Office. 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.
We can say that you will likely need to reinstall your software and reconfigure the firewall settings. Often there is the option to add sites to a whitelist, and you can give more permissions to Outlook. The easiest way to find out if this is the problem is to temporarily disable your antivirus software and log in to Outlook as usual. If the prompts go away, you'll know it was the antivirus software. There are a number of reasons this issue arises, which makes it even more infuriating.
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
Not something you want to take on lightly, but sometimes you have to. Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one. You can read how to fix your Outlook problem on the internet, but sometimes the suggestions don’t work for your specific case.
Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. For more information, see You may experience application pauses if you have a large Outlook data file. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items.
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.
If so, wait a short time (usually Outlook troubleshooting guide 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.
Creating a Outlook troubleshooting guide new Outlook profile may resolve some performance issues. Items moved into new folders will still be located when searching a mailbox. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite.
To get help and troubleshoot other Microsoft products and services, enter your problem here. If your mailbox is full, we won't be able Outlook troubleshooting guide to reply to your request. The Microsoft Support and Recovery Assistant has been replaced with troubleshooters integrated into Get Help. Because it's so easy for users to create Office 365 Groups, you aren't inundated with requests to... Identifying patterns helps to diagnose what the problem might be.
Reduce the number of recipients for a single email to less than 300. We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. We love reading your suggestions on new features and feedback about how you use our products!
For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform this operation. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine.
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 Outlook troubleshooting guide query. If the self-help doesn't solve your problem, scroll down to Still need help?
To learn more about how to send us feedback, please see How do I give feedback on Microsoft Office. 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.
We can say that you will likely need to reinstall your software and reconfigure the firewall settings. Often there is the option to add sites to a whitelist, and you can give more permissions to Outlook. The easiest way to find out if this is the problem is to temporarily disable your antivirus software and log in to Outlook as usual. If the prompts go away, you'll know it was the antivirus software. There are a number of reasons this issue arises, which makes it even more infuriating.
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
Not something you want to take on lightly, but sometimes you have to. Similar to our earlier suggestion of repairing Office (see #3 Repair Your Microsoft Office above), perform the same steps except choose to Uninstall. Be aware that you may need your product key if you received one. You can read how to fix your Outlook problem on the internet, but sometimes the suggestions don’t work for your specific case.
Be aware that if you are connecting to an Exchange Server mailbox, your mailbox or your email messages are already being scanned by antivirus software on the server. For more information, see You may experience application pauses if you have a large Outlook data file. Optionally, if you have a Microsoft Exchange online archive, you can move items to that archive or create retention policies to automatically dispose of older items.
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.
If so, wait a short time (usually Outlook troubleshooting guide 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.
Creating a Outlook troubleshooting guide new Outlook profile may resolve some performance issues. Items moved into new folders will still be located when searching a mailbox. Outlook forwards meeting invitations to other attendees without anyone actually sending an update or forwarding an invite.
To get help and troubleshoot other Microsoft products and services, enter your problem here. If your mailbox is full, we won't be able Outlook troubleshooting guide to reply to your request. The Microsoft Support and Recovery Assistant has been replaced with troubleshooters integrated into Get Help. Because it's so easy for users to create Office 365 Groups, you aren't inundated with requests to... Identifying patterns helps to diagnose what the problem might be.
Reduce the number of recipients for a single email to less than 300. We have multiple tools to help you automatically diagnose an issue, troubleshoot, and fix problems with Outlook. We love reading your suggestions on new features and feedback about how you use our products!
For more information, please see Access to Microsoft 365 email and applications by audience. For information about Microsoft 365 storage quotas, please see Microsoft 365 storage quotas and information. The folder may have been deleted or the server where the folder is stored may be unavailable. You don't have appropriate permission to perform this operation. MAPI does not validate that a provider's DLL that it is requested to load is registered correctly in MapiSVC.inf or even that it comes from the local machine.
