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Microsoft Exchange not working with my iPhone or iPad.

Bob 0 Reputation points
2026-05-08T01:09:47.2666667+00:00

Been having issues with Microsoft Exchange and my iPhone. For some reason, my phone stopped syncing with the exchange about 7-10 days ago. Apple support said that the Microsoft Exchange was having issues and that they have received a bunch of calls with the same issue. I've deleted my account, restarted a bunch of times and still have the same issue. My business is suffering and I'm wondering if I need to escalate this up the food chain as this is way too much time to be down. Any ideas or suggestions? Very frustrated with Microsoft Exchange.

Exchange | Exchange Server | Other
Exchange | Exchange Server | Other

A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.

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  1. Hani-Ng 11,315 Reputation points Microsoft External Staff Moderator
    2026-05-08T02:16:33.27+00:00

    Hi Bob

    Based on your description, your issue may be related to a known issue: iOS & iPadOS users may experience issues accessing their Outlook and Hotmail accounts from the iOS/…

    You can also view the official service status here: Microsoft service health status (scroll down > Show product)

    If your situation matches this known issue, you should follow the steps in the article to try to resolve the issue. You can also check out this article to get the latest updates as soon as they're available.

    If your situation is different, to better understand your issue, could you please share some information:

    • Are you using a personal account (like Outlook.com/Hotmail) or a work/school account (end with you organization name)?
    • Do you use Apple's Mail app, Outlook app, or both?

    I hope this information helps and I look forward to your response.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. AI answer

    2026-05-08T01:10:07.4166667+00:00

    Follow these steps to troubleshoot the Exchange sync issue with iPhone/iPad:

    1. Confirm whether this is a first-time setup issue or an existing account that stopped syncing:
      • If the account was syncing before and recently stopped, this is treated as a sync interruption rather than an initial setup problem.
    2. Check for known Exchange ActiveSync/device issues:
      • There are known cases where iOS devices and Exchange/Exchange Online can have sync problems due to how the device sends ActiveSync commands.
      • If the device is intermittently failing to connect or sync, avoid repeatedly pressing Synchronize or rapidly switching folders and syncing, as this can cause throttling on the service. When a delay occurs, wait at least 10 minutes before trying again so throttling can clear.
    3. Switch to manual sync temporarily:
      • On the iPhone/iPad mail account for Exchange, switch to manual sync (or reduce the frequency of automatic sync) and test whether the device can connect and sync when triggered manually. This helps prevent the device from sending too many identical commands and triggering throttling.
    4. Verify the Exchange server side (for on-premises Exchange):
      • If using Exchange Server 2010 or 2013 and the issue started after an iOS update (historically iOS 7.0 caused issues), ensure the appropriate Exchange updates are installed:
        • For Exchange Server 2013: install the update described in KB 2859928 (Cumulative Update 2 for Exchange Server 2013).
        • For Exchange Server 2010 SP3: install the update rollup described in KB 2866475 (Update Rollup 2 for Exchange Server 2010 SP3).
      • These updates address issues where multiple ActiveSync threads put protected objects into a bad state, breaking synchronization.
    5. Check wireless/network and device implementation:
      • If problems persist, verify the device’s wireless connectivity on the local network.
      • The implementation of the Exchange ActiveSync (EAS) protocol on the device controls how frequently commands are sent. If the device is misbehaving, contact the device manufacturer or carrier to capture and review device logs and investigate.
    6. Escalation path:
      • If using Microsoft 365/Exchange Online, involve the Microsoft 365 admin or technical support to check for throttling, device partnerships, or service-side issues.
      • If using on-premises Exchange, the Exchange admin should review server health, install the relevant updates, and use the “Troubleshoot ActiveSync with Exchange Server” guided walkthrough referenced in the documentation.

    These steps focus on reducing sync pressure from the device, ensuring Exchange is patched for known ActiveSync issues, and involving the appropriate admin/support channels to restore reliable sync so business impact is minimized.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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