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This prerequisite can be skipped , if you don’t want to provision Mailboxes mailboxes in ExchangeOnline.
To use the ExchangeOnline with the The Office 365 System Connector , manages mailboxes in Exchange Online. The ExchangeOnlineManagementPowershell-Module must be installed on the server where the System Connector is installed needs the ExchangeOnlineManagementPowershell-Module.
Run the follwing following command in Windows Powershell:
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