In a recent support case the Skype for Business Mac client wasn't connecting to Exchange Web Services (EWS) after the EWS Access Policy was configured with the following cmdlets: Set-CASMailbox -Identity brick@borderlands.lab -EwsApplicationAccessPolicy EnforceAllowList -EwsAllowOutlook $true -EwsAllowMacOutlook $true Set-CASMailbox -Identity brick@borderlands.lab -EwsAllowList @{add='UCWA/*', 'OC/*', 'OWA/*'} https://docs.microsoft.com/powershell/module/exchange/client-access/Set-CASMailbox Get-CASMailbox -Identity brick@borderlands.lab | fl Name,EwsApplicationAccessPolicy,EwsAllowOutlook,EwsAllowMacOutlook,EwsAllowList EWS was working except … Continue reading SfBMac: Cannot connect to EWS after enabling EWS Access Policy →