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Checking for quarantined EAS devices

Sometimes, authentication or syncing fails for a specific email account. When this happens, it might be because the ActiveSync protocol is causing the end user's email server to block access. This is the protocol Nylas uses to sync data from various Microsoft services.

Follow these steps to check for quarantined devices:

  1. Log in to the Microsoft Exchange Admin center.
  2. Select Mobile in the left navigation.
  3. Under Quarantined devices, verify that no devices are listed.
  4. Enable Mobile device provisioning.
  5. Make sure your access rules don't conflict with Nylas' suggested Microsoft 365 settings.
  6. In the left navigation, select Protection.
  7. Navigate to Action center and verify no accounts are impacted by the protection system.
  8. Navigate to Quarantine and verify that no devices have been blocked or quarantined.