Download ActiveSync 4.5 from Official Microsoft Download Center
Jul 15, 2024 · Microsoft ActiveSync 4.5 is the latest sync software release for Windows Mobile-powered devices. ActiveSync provides a great synchronization experience with Windows® …
Exchange ActiveSync | Microsoft Learn
Apr 30, 2025 · Exchange ActiveSync is an Exchange synchronization protocol that's optimized to work together with high-latency and low-bandwidth networks. The protocol, based on HTTP …
Exchange ActiveSync in Exchange Online | Microsoft Learn
Feb 22, 2023 · Exchange ActiveSync is a Microsoft Exchange synchronization protocol that's optimized to work together with high-latency and low-bandwidth networks. The protocol, based …
Enable or disable Exchange ActiveSync access to mailboxes in …
Apr 30, 2025 · Learn how administrators can enable or disable Exchange ActiveSync access to specific mailboxes in Exchange Server 2016 or Exchange Server 2019.
Download ActiveSync 4.5 from Official Microsoft Download Center
Jul 15, 2024 · Microsoft ActiveSync 4.5 is the latest sync software release for Windows Mobile-powered devices. ActiveSync provides a great synchronization experience with Windows® …
Mobile device can't connect via ActiveSync - Exchange
Jun 25, 2025 · Describes a scenario in which a mobile device can't connect to Exchange Online in Microsoft 365 by using Exchange ActiveSync. Provides a resolution.
Configure mobile phones to access email in Exchange Online
Feb 22, 2023 · You can configure a mobile phone to use Microsoft Exchange ActiveSync. You should perform this procedure on each mobile phone in your organization.
Troubleshoot ActiveSync with Exchange Server - Exchange
Jun 25, 2025 · The Exchange ActiveSync organization settings allow administrators the ability to set the default access level for ActiveSync devices. These default settings include Block, …
Managing devices for Outlook for iOS and Android for Exchange …
Apr 30, 2025 · This article focuses on specific Exchange ActiveSync features and scenarios for mobile devices running Outlook for iOS and Android when authenticating with Basic …
Exchange ActiveSync device settings with Exchange hybrid …
Jan 27, 2023 · Exchange ActiveSync device settings with Exchange hybrid deployments Exchange ActiveSync devices are automatically reconfigured when a mailbox is moved from …