1 My Outlook running very slow
Jennifer Ruiz edited this page 1 week ago

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 antivirus software add-ins that are installed in Outlook.

Start classic Outlook in safe modeIn Windows 10, click Start.Type Outlook /safe, in the Search programs and files and then click OK.Close and re-open Outlook.If the issue is resolved, you can keep working, or if you have time, take the following steps to find out what COM Add-in is causing the problem.

For more information, see Outlook performance issues when there are too many items or folders in a cached mode .ost or .pst file. When you install Office, an Inbox Repair Tool (SCANSPST.EXE) is also installed on your PC. The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors. Resolving Outlook’s "Loading Profile" hang involves a mix of system checks, process management, and profile or data file repair. Applying these targeted steps gets Outlook running smoothly and restores access to your mailbox.

You must have at least three user accounts on the computer to complete these steps. You can automatically repair your Office program files to resolve such problems as Outlook freezing or not responding. If creating a new profile step-by-step Outlook troubleshooting solves your issue, you can return to the Show Profiles dialog and delete your old profile. Your profile stores a variety of settings that control how Outlook looks and feels. You can create a new profile and then add your email accounts to the new profile. We recommend setting Windows Update to automatically download and install recommended updates.

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. Note that you can quickly tell how your mail is currently sorted, by the presence of a small triangle on the field headers. You may notice that All, Unread , Mentioned and other sort and filtering options, such as By date, and Newest are missing in Outlook above your email list. Please install the Windows 10 Fall Creators Update to fix this issue. Outlook 2016 freezes when you try to preview an Excel file that's attached to an email.

There are quite a few different causes for this, but one of the most common is a defective add-in. Here’s how to disable add-ins in Outlook even when it keeps crashing. You have successfully created a Distribution Group. The maximum number of distribution group members is 100,000 members, and the recipient rate limit is 10,000 recipients per day. Step 1 - The hard limit of recipients for a single email message is 300. Reduce the number of recipients for a single email to less than 300.

When you install Outlook, an Inbox repair tool (scanpst.exe) is also installed on your PC. The Inbox repair tool can resolve problems by scanning your Outlook data files, and repairing errors. To use the Inbox repair tool, exit Outlook, and then follow the steps in Repair Outlook Data Files (.pst and .ost). In the first place, check whether your antivirus is up-to-date. If the above does not help, turn off the antivirus and step-by-step Outlook troubleshooting see if it brings Outlook back to life.

Below, you will see some of the most common issues that users run into, and what the most efficient way to troubleshoot Outlook is.Running Out of Mailbox Space. ...Outlook Crashes or Freezes on Opening. ...Recovering Deleted Items. ...Search Is Not Working. ...View Settings.

If you are still facing the same issue, it means your PST file is damaged. If you want to repair your corrupted PST file, opt for the Cigati PST Repair Tool. It will recover the corruption from your desired PST files.

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 step-by-step Outlook troubleshooting for Microsoft Outlook (US English only). Many of these items can be automatically checked by the Classic Outlook Advanced Diagnostics troubleshooter.

If a Microsoft 365 application such as Word or Excel isn't working correctly, sometimes step-by-step Outlook troubleshooting restarting it will fix the problem. When you're done, you might need to restart your computer. You might need to set Windows Update to automatically download and install recommended updates.

This happens to accounts that are configured in the iOS Mail app. The loading of unregistered MAPI services has been disabled by default to make Outlook more secure. 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. If you typically use an Outlook.com account for email, this issue can occur if there are multiple aliases on the account and the 3rd party email address is the primary alias.