Android Exchange Sync Problems: Contacts and Calendar Not Updating

Hello,

I manage a fleet of more than 1,000 Samsung Android devices using Omnissa Workspace One (AirWatch), devices are enrolled in COPE. We use Gmail, Google Calendar, and the native Samsung Contacts app in the work profile, all synchronized through an Exchange ActiveSync connector.

Since Wednesday, November 26th, we have been experiencing synchronization issues:

- Contacts and calendar events saved on Exchange disappear after some time.

- The Calendar app eventually shows an “Unauthorized Action” error and refuses to open.

- Gmail continues to sync emails normally.

The issue occurs randomly (sometimes after one hour, sometimes longer). Clearing Gmail’s app data and signing in again temporarily resolves the problem, but the issue always comes back. We've tryied uninstalling and reinstalling the app through our MDM but we can only do it user by user and we're not sure about it fixing the issue.

We have no means to "rollback" Gmail's version to an older one through our MDM, i've tryied uninstalling recent updates on one of my test phones, it's seems stable for the moment.

We noticed that Gmail received an update recently, and a couple of other fleet managers have reported the same problem since that update on Play store's comments.

Have you identified any bug or recent change in Gmail that could affect Exchange/ActiveSync synchronization?

Thank you in advance for your assistance.