Outlook for Microsoft 365 for Mac Outlook 2016 for Mac Outlook 2019 for Mac More. On the Tools tab, click Accounts. In the left pane, click the account in which you want to change the password. In the right pane, enter a new password in the Password box. Close the Accounts window. Outlook saves the password automatically. May 21, 2020 Change password in Remote Desktop. There are many ways to cha..