Double-click Programs and Features. Click Microsoft 365, and then click Change. Select Quick Repair, and then click Repair. You may have to restart your computer after the repair process is complete.
How do I run a diagnostic in Outlook?
To scan Outlook for known issues and create a detailed report of your Outlook configuration, follow these steps: Select Advanced diagnostics, and then select Next. Select Outlook, and then select Next. When you are prompted to confirm that you are using the affected machine, select Yes, and then select Next.
