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Office Settings & Configuration

How to Change the Language of a Shared Mailbox in Outlook

Steve KSteve K Oct 22, 2026 868 views

Question details

The user needs to change the display language and update default folder names for a shared mailbox in Outlook on the web.

How to Change the Language of a Shared Mailbox in Outlook
Product
Microsoft Outlook
Device & OS
not provided
Scenario
Configuring language preferences and default folder names for an Outlook shared mailbox.
Observed behavior
The user wants to switch the mailbox language and needs the default folders to match the new language, but the option to rename folders is initially hidden.
Before you start

Ensure you have the necessary access permissions to open and manage settings for the shared mailbox in Outlook on the web.

Solution 1Recommended

Change the Language and Rename Default Folders in Outlook on the Web

Use the Outlook web interface to access the shared mailbox directly and update its regional and language settings.

To properly change the language of a shared mailbox, you must open it directly in its own browser tab through Outlook on the web. Applying language changes from your primary mailbox settings will not affect the shared mailbox.

1
Access Outlook on the web

Go to www.office.com, log in with your credentials, and select the Outlook application.

2
Open the shared mailbox

Click your profile picture in the upper-right corner and select 'Open another mailbox'. Enter the shared mailbox name and click 'Open'.

3
Navigate to language settings

In the new tab displaying the shared mailbox, click the 'Settings' (gear icon) in the upper-right corner. Then, choose 'General' and click on 'Language and time'.

4
Select the new language

Click the language drop-down menu and select your desired display language.

5
Rename default folders

After selecting the new language, check the box that says 'Rename default folders so their names match the specified language', and click 'Save'.

Checkbox Visibility: The option to 'Rename default folders so their names match the specified language' will only become visible after you actively select a different language from the drop-down menu.
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Frequently Asked Questions

Why can't I see the 'Rename default folders' checkbox?

This checkbox remains hidden by default. It will only appear on your screen after you have actively chosen a new language from the drop-down menu in the Settings pane.

Does changing the shared mailbox language affect other users?

Yes, if you choose to rename the default folders (like Inbox, Sent Items), those folder names will change to the new language for everyone who accesses the shared mailbox.

Can I change the shared mailbox language from the Outlook desktop app?

No, managing the default folder languages and regional settings for shared mailboxes is most reliably done through Outlook on the web by using the 'Open another mailbox' feature.