Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue. In Outlook, choose File. Choose Account Settings > Account Settings. On the Email tab, choose your account (profile), and then choose Repair.

To change the default name or location of this backup file, in the Enter name of backup file box, enter a new name, or choose Browse to select the file you want to use. You may need to run the tool several times in order to repair your Outlook Data File.

CalCheck is a program that checks your Outlook calendar for problems, and performs various checks on general settings, such as permissions, free/busy publishing, delegate configuration, and automatic booking.

To invoke the classic Outlook diagnostics in the Get Help app directly go to Classic Outlook troubleshooters. Output from the classic Outlook Get Help diagnostic go to this folder, %LocalAppData%\GetHelp. There are some scenarios where the Get Help troubleshooters may not work.

Fixes or workarounds for recent issues in new Outlook for Windows.

Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of classic Outlook problems. Check out this article: Resolve Outlook for Windows issues with automated troubleshooting tools.

Most email apps like Outlook are able to automatically configure email server settings. If you need server settings or help finding your server settings, click on one of the links below: What server settings do I need from my email provider?

Contact your administrator to determine if POP or IMAP access are enabled for your account. If setup failed, choose Change Account Settings. Update the account information with the one you received from your email provider or from the POP and IMAP server name reference topic. Choose Connect.

To find out the name of your Exchange server, you have to contact the person who gave you the email address, or contact someone in your IT department, for the name of your Exchange server. To be able to edit the port number that follows the server address, select this check box.