Manage Outlook Web App Features Using Outlook Web App Mailbox Policies

• To learn how to install and configure Windows PowerShell and connect to the service, see Use Windows PowerShell in Exchange Online.
  
• For a detailed description of the Outlook Web App settings you can change using Outlook Web App mailbox policies, see Outlook Web App Mailbox Policies | Available Settings.
  
• When you change a setting in an Outlook Web App mailbox policy, often the results aren’t immediately visible. Wait a few minutes for the settings to take effect.
  

All organizations have at least one built-in Outlook Web App mailbox policy that's automatically assigned to all the user mailboxes that you create. Every mailbox must have an Outlook Web App mailbox policy assigned to it, and only one Outlook Web App mailbox policy can be assigned to a mailbox.

Here's how Outlook Web App mailbox policies work in Microsoft Office 365 and in Microsoft Live@edu.

Note   In Live@edu organizations, the names of the Outlook Web App mailbox policies correspond to the names of the available mailbox plans. When you create a new mailbox and assign a mailbox plan to it, the corresponding Outlook Web App mailbox policy is also assigned to the mailbox. If you change the mailbox plan that's assigned to an existing mailbox, the Outlook Web App mailbox policy of the mailbox isn't changed, and you can't change it. However, you can configure different Outlook Web App settings for mailboxes that are assigned the DefaultMailboxPlan and mailboxes that are assigned the GalDisabledMailboxPlan.

Here are a few common scenarios:

• Prevent users from opening or saving attachments in Outlook Web App
  
  • Prevent users from opening or saving attachments in Outlook Web App in Live@edu
    
  • Prevent users from opening or saving attachments in Outlook Web App in Office 365
    
• Force WebReady Document Viewing only for all supported file types
  
  • Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App in Live@edu
    
  • Force WebReady Document Viewing only for all supported file types in Office 365
    
• Disable access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App
  
  • Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App in Live@edu
    
  • Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App in Office 365
    

Set-OwaMailboxPolicy <Name> -DirectFileAccessOnPrivateComputersEnabled $false

Set-OwaMailboxPolicy OwaMailboxPolicy-DefaultMailboxPlan -DirectFileAccessOnPrivateComputersEnabled $false
Set-OwaMailboxPolicy OwaMailboxPolicy-GalDisabledMailboxPlan -DirectFileAccessOnPrivateComputersEnabled $false

Set-OwaMailboxPolicy OwaMailboxPolicy-Default -DirectFileAccessOnPrivateComputersEnabled $false

Set-OwaMailboxPolicy <Name> -DirectFileAccessOnPrivateComputersEnabled $false -WebReadyDocumentViewingOnPrivateComputersEnabled $true

Set-OwaMailboxPolicy OwaMailboxPolicy-DefaultMailboxPlan -DirectFileAccessOnPrivateComputersEnabled $false -WebReadyDocumentViewingOnPrivateComputersEnabled $true
Set-OwaMailboxPolicy OwaMailboxPolicy-GalDisabledMailboxPlan -DirectFileAccessOnPrivateComputersEnabled $false -WebReadyDocumentViewingOnPrivateComputersEnabled $true

Set-OwaMailboxPolicy OwaMailboxPolicy-Default -DirectFileAccessOnPrivateComputersEnabled $false -WebReadyDocumentViewingOnPrivateComputersEnabled $true

Set-OwaMailboxPolicy <Name> -CalendarEnabled $false -IntegratedInstantMessagingEnabled $false -TextMessagingEnabled $false

Set-OwaMailboxPolicy OwaMailboxPolicy-DefaultMailboxPlan -CalendarEnabled $false -IntegratedInstantMessagingEnabled $false -TextMessagingEnabled $false
Set-OwaMailboxPolicy OwaMailboxPolicy-GalDisabledMailboxPlan -CalendarEnabled $false -IntegratedInstantMessagingEnabled $false -TextMessagingEnabled $false

Set-OwaMailboxPolicy OwaMailboxPolicy-Default -CalendarEnabled $false -IntegratedInstantMessagingEnabled $false -TextMessagingEnabled $false