I have tested this only in a Hybrid environment. Create a Universal AD Security Group called O365_Disabled_ActiveSync_Users. Add all the members to it. Make sure it has an email address that registers in Office365. Connect to Office365 via Powershell ISE:
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Import-Module MSOnline $O365Cred = Get-Credential $O365Session = New-PSSession –ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell -Credential $O365Cred -Authentication Basic -AllowRedirection Import-PSSession $O365Session Connect-MsolService –Credential $O365Cred |
Copy the following code in a file called DisableActiveSync.ps1 and run in powershell. Add…