Prevent Adding Work or School Accounts and accounts adding in outlook new app or classic via Intune policy

To prevent users from adding additional work or school accounts in the new Outlook app and the classic app using Intune policy, you can utilize the AllowedOrganizationAccountDomains and PersonalAccountsEnabled parameters in the OwaMailboxPolicy. By configuring these parameters, you can restrict which accounts can be added to Outlook.

1. AllowedOrganizationAccountDomains: This parameter allows you to specify which domains are permitted for adding accounts in Outlook. You can set this to limit the accounts to only those from your organization.
2. PersonalAccountsEnabled: Setting this parameter to $false will prevent users from adding personal accounts once their work or school account is added.

Additionally, for managed devices, you can use app configuration policies to control which accounts are allowed. This ensures that only organization accounts can be added, effectively blocking personal accounts.

References:

• Accounts in the new Outlook for Windows
• Control the installation and use of new Outlook
• Policy Management in new Outlook for Windows

@KIRAN KUMAR NAVURI, Thanks for posting in Q&A.

From your description, I know you want to prevent adding additional work or school accounts in outlook new app or classic via Intune policy.

Based on my research, there is no related settings in Intune that can do this, however, you can prevent adding additional work or school accounts in outlook new app or classic via Registry.

Here is a link about how to configure it.

https://www.slipstick.com/exchange/prevent-users-adding-email-accounts-outlook/

Non-official, just for reference.

Moreover, if you want Intune to implement this feature in the future, you can submit your feedback to Intune.

https://feedbackportal.microsoft.com/feedback/forum/ef1d6d38-fd1b-ec11-b6e7-0022481f8472

Hope it will help.

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