


ost) was deleted or damaged as the result of incorrect uninstallation or reinstallation of Outlook.Īnyway, whatever the reason is, the outcome is the same - you cannot open the Outlook window because of this error: " Cannot start Microsoft Outlook. Other reasons may be when you run Outlook in the compatibility mode, or if you are using a profile created in an older Outlook version, or if the Outlook data file (.pst or. No one knows the exact reason why this happens, but all versions of Microsoft Outlook from 2003 to the newest Outlook 2019 may be affected. A good indication that the file is corrupted is when its size is 0 KB. The main symptom of this problem is very obvious and easily recognizable: you click Outlook's icon, an hourglass appears and is hanging for a while, and then you get the "Cannot start Microsoft Office Outlook" error.Īccording to Microsoft, the major cause of this issue is a corrupted Navigation Pane settings file - profilename.xml, where "profilename" is the name of your Outlook profile. Post questions, follow discussions and share your knowledge in the Community."Unable to start Microsoft Outlook" error - causes and symptoms To get help and troubleshoot other Microsoft products and services, enter your problem here. If you can't sign in, click here.įor other help with your Microsoft account and subscriptions, visit Account & Billing Help. To contact us in, you'll need to sign in. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes. To get support in, click here or select Help on the menu bar and enter your query. When your email message is ready, choose Send. Type your message, and then choose > Insert signature at the bottom of the compose pane.

If you've created a signature but didn't choose to automatically add it to all outgoing messages, you can add it later when you write an email message.

Manually add your signature to a new message Note: You can always return to the Compose and reply page and select or clear the check box for automatically including your signature.
