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Cannot send or receive emails on managed device when Data Saver is on

Environment 

Knox Platform for Enterprise (KPE)

Overview

On a device with a work profile, emails cannot be sent or received when the Data Saver feature is enabled on the personal side.

Cause

There is a bug preventing the Email app from connecting to a proxy server through the VPN when Data Saver is enabled.  

Resolution

The Knox team has identified a fix, scheduled for an upcoming firmware update.

Workaround

If you are encountering this error without a VPN, enable data for the Email app in the work profile by following the steps below:

  1. On your device, navigate to Settings > Workspace > Apps > Email > Mobile data.
  2. Enable Allow app while Data saver on.

You can then send and receive emails without fully disabling Data Saver.

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