MC916298 – iOS Build now included in ActiveSyncDeviceAccess rule for Outlook on iOS

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check before: 2024-11-01

Product:

Exchange, Microsoft 365 Apps, Outlook

Platform:

iOS, Online, US Instances, World tenant

Status:

Change type:

Feature update, Admin impact

Links:

Details:

Summary:
Starting mid-November 2024, Outlook on iOS will support specifying iOS build numbers in ActiveSyncDeviceAccess rules. Organizations can update existing rules to use this feature, but it's not mandatory. Review the 'New-ActiveSyncDeviceAccessRule' documentation for guidance.

Details:
We're making some changes to the ActiveSyncDeviceAccess rule DeviceOS parameters for Outlook on iOS.
Starting in mid-November, we will start supporting the operating system build number in addition to the operating system version number.
[When this will happen:]
General Availability (Worldwide, GCC, GCC High, DoD) We will roll out this change in mid-November 2024

Change Category:
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Scope:
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Release Phase:

Created:
2024-10-23

updated:
2024-10-23

Task Type

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Docu to Check

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MS How does it affect me

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summary for non-techies**

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Direct effects for Operations**

Increased Risk of Access Issues
If organizations do not update their ActiveSyncDeviceAccess rules to include the new iOS build numbers, users with newer iOS versions may face access issues to their Exchange mailboxes, leading to potential disruptions in communication.
   - roles: IT Administrator, End User
   - references: https://learn.microsoft.com/powershell/module/exchange/new-activesyncdeviceaccessrule?view=exchange-ps

User Experience Degradation
Failure to adapt to the new rules may result in users experiencing degraded performance or inability to use Outlook on iOS effectively, impacting their productivity and overall satisfaction with the IT services.
   - roles: End User, Support Staff
   - references: https://learn.microsoft.com/powershell/module/exchange/new-activesyncdeviceaccessrule?view=exchange-ps

Configutation Options**

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IT Security**

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explanation for non-techies**

Starting in mid-November 2024, a new feature will be available for Outlook on iOS that allows organizations to specify iOS build numbers in their ActiveSyncDeviceAccess rules. Think of this as adding a new layer of detail to the way you can control access to your organization's email systems.

Imagine you are a security guard at a building entrance. Previously, you were only checking the ID cards of people entering, which is like checking the iOS version number. Now, with this update, you can also check a special code on their ID card, similar to the iOS build number. This additional detail helps you ensure that only the right people, or in this case, devices with the correct build, can access the building.

Organizations can choose to update their existing rules to use this new feature, but it's not required. If you decide to use it, you will need to update your rules to include the iOS build number. However, if you are satisfied with your current setup, you don't need to do anything. It's like having the option to upgrade your security system with a new feature but keeping the old system if it still meets your needs.

For those interested in using this new capability, you can refer to the "New-ActiveSyncDeviceAccessRule" documentation for guidance on how to implement these changes. This will help you understand how to incorporate the iOS build number into your access rules effectively.

** AI generated content. This information must be reviewed before use.

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