How to Run the /resetnavpane command in outlook? Step1: Close Outlook. Step2: Choose Start > Run. Step3: In the Open box, type Outlook.exe /resetnavpane, and then choose OK. Related Articles How to solve Error 503: Valid RCPT command must precede DATA in Outlook email client? How to avoid Trash folder to sync from the server in Outlook? How to make sure that all the emails in Outbox will be sent in Outlook? How to Send/Receive email only when you want to in Outlook? How to view emails as conversations in Outlook email client? How to set the default folder for Outlook client to open on? Need Support?Can't find the answer you're looking for?Contact Support