iOS
iOS Troubleshooting:
MDM:
1.) Ensure the device is compliant. Click "Check Settings" within the company portal app. Try accessing company data again after ensuring device is compliant.
2.) If utilizing native email on iOS, try downloading Outlook for iOS. Ensure email correctly syncs. If so, the issue is device related.
3.) un-enroll and re-enroll the device into the Intune Company Portal application. If unable to access UMSOM resources after re-enrolling, please contact your help desk for further assistance
MAM:
1.) Open the Authenticator app and unregister the device. Go to Settings, Click "Device Registration" and then "Unregister Device".