Duplicate number in Skype for Business

https://social.technet.microsoft.com/Forums/lync/en-US/5d4bc40e-4a02-43c1-9a48-07852e5f8bfc/unique-lineuri-but-485-ambiguous?forum=lyncvoice


get-csuser etc will not see any disabled users with a number, but this script will see:

Get-AdUser -filter * -property msRTCSIP-Line | Select Name, @{Name="MSRTCSIPLine";Expression={$_."msRTCSIP-Line"}}|where {$_.MSRTCSIPLine -like "tel:+XXXXXXX*"}

Script to Clear Credman

https://blogs.technet.microsoft.com/rmilne/2019/01/11/script-to-clear-credman/