Moving users from Skype for Business On-Prem to Teams get-cspowershellendpoint error

Audi9112450 

Sorry had a busy day yesterday and never managed to get back to this. You shouldnt need -proxypool at all to be honest so you can remove that bit if you like. The reason for your error is because you have the users synced with AD so their line URI comes from AD. In that case you can run the below. With this you should only be required to enter credentials once per CSV.

Import-Module SkypeOnlineConnector
$session = New-CsOnlineSession -OverrideAdminDomain "mydomain.onmicrosoft.com"
Import-PSSession -Session $session -AllowClobber
$csv = import-csv  "Path to my script.csv"
$cred = get-credential
##Loop through all users in CSV
foreach ($user in $csv) {

    ##Move User
    Move-CsUser -Identity $user.sipaddress -Credential $Cred -Target sipfed.online.lync.com -movetoteams -Confirm:$true

    ##Grant Upgrade Policy
    Grant-CsTeamsUpgradePolicy -Identity $user.SipAddress -PolicyName UpgradeToTeams

    ##Grant dial plan
    Grant-CsTenantDialPlan $user.SipAddress -PolicyName DialPlan-Global 

    ##Grant VR Policy
    Grant-CsOnlineVoiceRoutingPolicy $user.SipAddress -PolicyName $user.routingpolicy 
    Grant-CsTeamsCallingPolicy $user.SipAddress -PolicyName Tag:AllowCalling 
    Set-CsUser $user.SipAddress -EnterpriseVoiceEnabled $true -HostedVoiceMail $true  
    Get-CsOnlineUser $user.SipAddress |  Select-Object UserPrincipalName, DisplayName, EnterpriseVoiceEnabled, HostedVoiceMail, OnPremLineURI, OnlineVoiceRoutingPolicy, TeamsCallingPolicy, TeamsUpgradePolicy 
}