Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue.

You can use the Inbox Repair tool (SCANPST.EXE) to diagnose and repair errors in your Outlook data file. The Inbox Repair tool checks the Outlook data files on your computer to see if they're in good …

Get Help has troubleshooters for classic Outlook for Windows you can run for many common scenarios, such as Outlook startup or profile setup problems. These often help resolve issues without the need …

Select the Microsoft 365 or Office product you want to repair and select Modify. Note: This will repair the entire Office suite even if it's just one application you want to repair such as Word or Excel. If you …

Outlook issues after connecting Outlook to Outlook.com Outlook.com email account appears as "outlook_ [long series of letters and numbers]@outlook.com" in Outlook for Windows [WORKAROUND]

The Inbox Repair Tool can resolve issues by scanning your Outlook data files and repairing errors. To use the Inbox Repair Tool, exit Outlook, go to Repair Outlook Data Files (.pst and .ost) and follow the …

For issues that are not covered on this page, we have multiple tools to help you automatically diagnose and fix a range of Outlook problems. Outlook Known issues in February 2026 updates

If you recently bought a new Windows device, you might not be able to find classic Outlook, or the icon appears, but when you try to open it, you might get an error that says, We couldn't verify and install …

Outlook for Mac features, add-ins, and known issues [FIXED] When the reading pane is set to one side or hidden, it is not retained upon re-launch in Legacy Outlook for Mac

Note: The Get Help troubleshooters are not applicable to new Outlook for Windows. Check to see if the new Outlook toggle is turned on or off. If it's on, see Troubleshooting Outlook issues.