Recently my samsung S3 keep prompt this error message “Update security settings to use” and after click on OK still failed to retrieve email. It was struggled me about 2 weeks and I really need to fix this. Luckily my boss didn’t notice yet why I’m slow in reply email lately. After tried few methods and seem not working.
- Manually set the server setting on the mobile device to m.outlook.com
- Add PIN to lock screen
- Delete account and reboot
- …etc
Go into Settings, Security, Device Administrators and remove the existing one for Email. Re-configure the exchange mailbox and it work !