Just a quick one this morning. I recently I had an issue where a customer did not have users being provisioned for Skype for Business Online. The customer had remnants of a legacy Lync 2013 on-premises deployment and they were using AADConnect for directory synchronisation.
Digging in the tenant I could see that even with the Skype for Business Online license enabled, even after waiting several hours if I used Get-CsOnlineUser in the Skype for Business Online Management Shell, no users were there.
This led me to my good friend Jaap Wesselius Blog Post here - Aha, a possible eureka moment! This must be the issue. Unfortunately it wasn't, however it was this attribute that ultimately resolved the issue and led me to the resolution.
It appears since Jaap's post further logic and evolution has occured in the service, and these previous on-premises Lync enabled users could not be enabled for Skype for Business Online anymore using the above solution.
What I had to do was actually set the msRTCSIP-DeploymentLocator attribute to 'sipfed.online.lync.com' - once this was done the user would provision. Interesting as no previous Lync Hybrid deployment was in-place or had been attempted. It appears to be logic in the service for users that were previously enabled for Lync or Skype for Business on-premises.
Anyhow to cut a long story short, I wrote a little script to do this. I utilised a CSV file to import my users, as I didn't want to perform this operation across all user objects in the Active Directory. Similarly if you are planning to perform a cutover from on-premises Lync or Skype for Business rather than a Hybrid deployment and migration - again this will come in handy before you deprovision the users in the on-premises service. Just make sure you export the list of users via Get-CsUser first. Of course if you do plan on wanting to write across all user objects then substitute the first line "$users =" with Get-AdUser or similar rather than Import-CSV.
It's fairly self explanatory - And remember, even if you don't plan on using Skype for Business - be aware that Microsoft Teams still has some reliance on the service for services such as voice. So you will want to ensure there's no issues to provide your tenant and users a smooth Teams experience.
$users = Import-CSV -Path C:\yourfilehere.CSV
ForEach ($user in $users){
$u = $User.samaccountname -replace '"',''
Set-ADuser -Identity $u -Replace @{'msRTCSIP-DeploymentLocator' = "sipfed.online.lync.com"}}
