enable-MobileExcelWebAccess-feature.ps1

#Definition of the function that allows to enable a SPO Feature
function Enable-SPOFeature
{
	param ($sSiteColUrl,$sUserName,$sPassword,$sFeatureGuid)
	try
	{
		#Adding the Client OM Assemblies
		#TODO - copy assemblies to the folder specified below
		Add-Type -Path "C:\Temp\Microsoft.SharePoint.Client.dll"
		Add-Type -Path "C:\Temp\Microsoft.SharePoint.Client.Runtime.dll"
		
		#SPO Client Object Model Context
		$spoCtx = New-Object Microsoft.SharePoint.Client.ClientContext($sSiteColUrl)
		$spoCredentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($sUsername, $sPassword)
		$spoCtx.Credentials = $spoCredentials
		
		Write-Host "----------------------------------------------------------------------------" -foregroundcolor Green
		Write-Host "Enabling the Feature with GUID $sFeatureGuid !!" -ForegroundColor Green
		Write-Host "----------------------------------------------------------------------------" -foregroundcolor Green
		
		$guiFeatureGuid = [System.Guid]$sFeatureGuid
		$spoSite=$spoCtx.Site
		$spoSite.Features.Add($sFeatureGuid, $true, [Microsoft.SharePoint.Client.FeatureDefinitionScope]::None)
		$spoCtx.ExecuteQuery()
		$spoCtx.Dispose()
	}
	catch [System.Exception]
	{
		write-host -f red $_.Exception.ToString()
	}
}

#Required Parameters 
$sSiteColUrl = "https://mycompany.sharepoint.com/<sites-or-teams>/<team-name>"
$sUserName = "me@mycompany.com"
$sFeatureGuid= "e995e28b-9ba8-4668-9933-cf5c146d7a9f"	
$sPassword = Read-Host -Prompt "Enter your password: " -AsSecureString

Enable-SPOFeature -sSiteColUrl $sSiteColUrl -sUserName $sUserName -sPassword $sPassword -sFeatureGuid $sFeatureGuid