Manage Outlook Web App Features Using Outlook Web App Mailbox Policies

 

Applies to: Office 365 for professionals and small businesses, Office 365 for enterprises, Live@edu

Topic Last Modified: 2011-11-23

Outlook Web App mailbox policies control users’ access to files and features in Outlook Web App. Administrators can use Outlook Web App mailbox policies to apply and standardize Outlook Web App settings for all the users in their organization. For example, you can prevent users from opening file attachments in Outlook Web App.

In Exchange Online, all Outlook Web App mailbox policy settings are configured using Windows PowerShell.

Before you begin

  • 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.
What are Outlook Web App mailbox policies and how do I use them?

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.

 

  Microsoft Office 365 for enterprises Microsoft Live@edu

Built-in Outlook Web App mailbox policies

OwaMailboxPolicy-Default

  • OwaMailboxPolicy-DefaultMailboxPlan
  • OwaMailboxPolicy-GalDisabledMailboxPlan

Can I modify existing Outlook Web App mailbox policies?

Yes

Yes

Can I create new Outlook Web App mailbox policies?

Yes. See Create and Assign Outlook Web App Mailbox Policies in Office 365.

No

Can I assign Outlook Web App mailbox policies to users?

Yes. See Create and Assign Outlook Web App Mailbox Policies in Office 365.

No

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.

When do I use Outlook Web App mailbox policies?

Here are a few common scenarios:

Prevent users from opening or saving attachments in Outlook Web App

Run the following command:

Set-OwaMailboxPolicy <Name> -DirectFileAccessOnPrivateComputersEnabled $false
Prevent users from opening or saving attachments in Outlook Web App in Live@edu

Run the following commands:

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

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Prevent users from opening or saving attachments in Outlook Web App in Office 365

Run the following command:

Set-OwaMailboxPolicy OwaMailboxPolicy-Default -DirectFileAccessOnPrivateComputersEnabled $false

Repeat this command for any custom Outlook Web App mailbox policies you've created and applied to users.

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Force WebReady Document Viewing only for all supported file types

WebReady Document Viewing lets users view specific file types in their Web browser, even if the user doesn't have the applications required to open those file types. To force users to view those file types in their Web browser, regardless of the applications installed on the client computer, run the following command:

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

Note   The WebReadyDocumentViewingOnPrivateComputersEnabled parameter is $true by default.

Force WebReady Document Viewing only for all supported file types in Live@edu

Run the following commands:

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

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Force WebReady Document Viewing only for all supported file types in Office 365

Run the following command:

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

Repeat this command for any custom Outlook Web App mailbox policies you've created and applied to users.

Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App

Run the following command:

Set-OwaMailboxPolicy <Name> -CalendarEnabled $false -IntegratedInstantMessagingEnabled $false -TextMessagingEnabled $false
Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App in Live@edu

Run the following commands:

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

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Disable user access to the calendar, instant messaging, and text messages (SMS) in Outlook Web App in Office 365

Run the following command:

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

Repeat this command for any custom Outlook Web App mailbox policies you've created and applied to users.

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