Disable Skype SKUs across all users

This week, I was presented with a question from a partner who was in the middle of the Skype for Business portion of a larger merger and acquisition migration project. The customer had enabled the Skype for Business license for all users in the tenant (including users who hadn't migrated for other domains and forests), and since neither the hybrid configuration nor DNS were complete, messages and calls were undeliverable.  To resolve this, we needed to update the users by removing the Skype for Business license--but the challenge was that users had a variety of SKUs including enterprise voice and conferencing.

Building on my previous Office 365 Licensing script, I came up with this:

 $Users = Get-MsolUser -All -DomainName <fqdn> | ? { $_.IsLicensed -eq $True }
foreach ($user in $users)
     {
     $user.userprincipalname
     Foreach ($Sku in $user.Licenses)
          {
          [array]$DisabledPlans = @()
          $PlansToDisable = @('MCOSTANDARD','MCOEV','MCOMEETADV','MCOPSTN1')
          [regex]$PlansToDisableRegEx = '(?i)^(' + (($PlansToDisable |foreach {[regex]::escape($_)}) –join "|") + ')$'
          [array]$SkuServicePlans = $Sku.ServiceStatus
          Foreach ($Plan in $SkuServicePlans)
               {
               $item = $plan.serviceplan.servicename
               If ($item -match $PlansToDisableRegex)
                    {
                    $DisabledPlans += $item
                    }
               }
           $DisabledPlansOption = New-MsolLicenseOptions -AccountSkuId $Sku.AccountSkuId -DisabledPlans $DisabledPlans
           Set-MsolUserLicense -UserPrincipalName $User.UserPrincipalName -LicenseOptions $DisabledPlansOption
           $DisabledPlansOptions = $null
           $DisabledPlans = $null
           }
      }

This way, regardless of the SKU that existed, we simply set the relevant Skype for Business service plan to Disabled in a new MsolLicenseOption and then applied it to the user.