Configuring preferences and options in Outlook.com
Can you go to www.outlook.com on the computer (not phone), and go to the gear icon on the upper right to pull up the Settings page, then use this screenshot to guide you to change the language?
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
“My Outlook.com/Hotmail account is stuck in Vietnamese on the web interface, even after clearing browser cache, using private/incognito windows, and trying the direct English URL. The iPhone app is fine.”
Configuring preferences and options in Outlook.com
Can you go to www.outlook.com on the computer (not phone), and go to the gear icon on the upper right to pull up the Settings page, then use this screenshot to guide you to change the language?