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Listed are all the license types associated with Windows Server, the various suites that include them, and pricing under Windows Server 20 R2. EAS will continue to be available as a protocol to manage through CARs.Windows Server 2016 moves to a Core + Client Access License (CAL) model for licensing, as opposed to its predecessor's Processor + CALs model.
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EAS is still used by Outlook for Windows 10 Mobile and third-party mobile email apps to sync mailbox information with Office 365. The EAS protocol is not affected by these changes. If REST access is not allowed when Microsoft disables EAS access for Outlook for iOS and Android, you will lose email access on your mobile device. You may be prompted occasionally to reauthenticate your Inbox when it is updated. Because REST access is likely to be allowed, users will probably not be affected.
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Users who are currently connected to Outlook for iOS and Android by using EAS will be migrated to REST. Customers have to make sure that REST access is allowed by this date so that they do not lose email access in those apps.
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On June 1, 2017, 60 days after REST is available and independently manageable, Microsoft will disable EAS for Outlook for iOS and Android. Today, some Office 365 Dedicated, Office 365 D/ITAR, and select Office 365 Enterprise tenants still use EAS to connect to Outlook for iOS and Android. REST provides advanced features and capabilities to the Outlook app. We are currently moving all Office 365 connections for Outlook for iOS and Android from our legacy AWS-based architecture (which uses EAS) to our new Office 365-based architecture.
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If you have set up a rule to allow REST by using one of the two options during Phase 1, you may want to update your rules accordingly.Įffect of changes on Outlook for iOS and Android Rules that have EWS predicates will no longer manage or apply to REST in any way. Therefore, they can be managed independently. When this second rollout is complete, EWS and REST will be two separate controls. Phase 2: Update CARs to make EWS and REST independently managed controlsĪfter Phase 1 is complete, we will begin rolling out a second change that will remove the EWS control's ability to manage REST through CARs. Set-ClientAccessRule blockEWS -AnyOfProtocols ExchangeWebServices -ExceptAnyOfProtocols REST Option 2: Update your existing EWS blocking rule to allow REST. New-ClientAccessRule -Action AllowAccess -Name AllowREST -AnyOfProtocols REST -Priority Option 1: Create a rule that has a higher precedence action that explicitly allows REST. Although EWS predicates will still apply to both EWS and REST, you have the following options:
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This change ensures the following behavior: There is no action for you to take, and the changes will not affect the behavior of your existing CARs. This change will be visible on your existing CARs in Windows PowerShell. Over the next several weeks, you will start seeing the REST predicate added to their existing CARs that include EWS predicates. Phase 1: Updates to existing Client Access Rules to add REST predicate This update will be made in the following phases: This update will be especially important if you want to deploy Outlook for iOS and Android because those apps use REST APIs to sync mail, calendar, and contact information with Office 365. The upcoming updates to Exchange CARs will let you independently manage these connection types. Previously, the predicate for ExchangeWebServices (EWS) applied to both the EWS protocol and REST API. We will be adding support for managing the REST API through Client Access Rules. Microsoft is making a change that affects how Client Access Rules (CARs) work in Office 365.
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This article applies to Office 365 Dedicated, Office 365 D/ITAR, and select Office 365 Enterprise customers.