If you’re wondering why you’re seeing the light version of Outlook Web App, how to get back to the standard version of Outlook Web app or to Office, or how to use a different email program on a mobile device or computer, see Outlook Web App Light.
If you're not sure which version you're using or can't find the setting options you're looking for, see Compare the standard and light versions of Outlook Web App.
Use the Language and Date and Time Formats page to change the time zone, language, and time format for Outlook Web App. You can choose from a list of available languages and date and time formats. The date and time settings adjust automatically based on the language you select. Changes to these settings take effect after you refresh the browser or sign out and sign in again.
To get to the Language and Date and Time page from the main Outlook Web App page, go to the upper corner and choose Options, then choose Regional Settings from the list in the navigation pane.
This setting lets you change your language preference for Outlook Web App. The language settings are initially configured when you sign in to Outlook Web App for the first time. After you sign in and choose your language setting for Outlook Web App, you can use this page to modify the language settings.
Choose Language Use the drop-down list to select the language you want to use.
Time zone and date and time formats
These settings let you set the date and time formats. Use the Current time zone list and the date and time style options to select the format for time and date that you want Outlook Web App to use. Configuring the language setting automatically adjusts these settings. However, modifying these settings won't change the language setting.