Changing your display name in Microsoft Office 365
1.Logon to your Office 365 email account using your current credentials
2.Click the ‘Settings’ icon, then choose options (screenshot below)
3.The ‘my account’ area is displayed. Click the ‘Edit information…’ link towards the bottom of the window (screenshot below)
4.The ‘account information’ screen is displayed. Click the ‘general’ link, then type your desired display name in the ‘*Display name:’ field’ and click the ‘save’ button (screenshot below)
5.NOTE: Please allow up to 15 minutes before the new display name change takes effect on new messages.