If the problem doesn't occur after you restart Outlook, one of the add-ins is likely the cause of the problem. Restore the add-ins one at a time until the problem does occur to determine which add-in is causing the problem. Make sure that the latest updates for Outlook are installed. For more information, see How to install the latest applicable updates fixing Microsoft Outlook problems for Microsoft Outlook (US English only). Many of these items can be automatically checked by the Classic Outlook Advanced Diagnostics troubleshooter.

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. Check the status bar at the bottom of the screen to see if another process is running. If so, wait a short time (usually two or three fixing Microsoft Outlook problems minutes) to see if Outlook starts working again.

In this regard, we recommend Kernel for Outlook PST repair tool to save your precious time. When you reinstall Outlook, you are removing the current application from your system and then installing it again. Reinstalling your Outlook client can fix installation errors and common software failures. In case of Outlook crash, re-installing the application is the most recommended method to fix the issue. Get Help has troubleshooters for classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems.

In some instances, however, one or more Add-ins may cause problems and needs to be disabled. Add-ins can either be removed from the Windows Control Panel or through Outlook itself. Perfectly repair and recover corrupted Outlook PST & OST files. When something goes wrong with Outlook, Microsoft recommends that we start it in Safe mode.

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!

If you have a large number of items in any single folder, you may experience performance issues during certain operations. For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. An out-of-date antivirus program may sometimes cause errors when you try to start Outlook as there may be compatibility issues between your antivirus program and Outlook.

The upcoming section will discuss the fixing Microsoft Outlook problems reasons in detail. I'm having an issue with one Outlook 365, the program open and get stuck at loading the user profile, any profiles. Your user profile is a collection of settings that let you customize the computer appearance and performance. It contains settings for desktop backgrounds, screen savers, sound settings, and other features.

User profiles help make sure that your personal preferences are used when you log on to Windows. If your antivirus software includes integration with Outlook, you may experience performance issues. You can disable all Outlook integration within the antivirus software. Or, you can disable any fixing Microsoft Outlook problems antivirus software add-ins that are installed in Outlook.

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