You are the administrator for Contoso, Ltd. You have an Office 365 tenant with Skype for Business Online. You have an account named Test.User@contoso.com.
You configure the account to use the same email address and Session Initiation Protocol (SIP) address.
You need to change the SIP address for the account to Test.User1@contoso.com.
What should you do?

A.
In the Office 365 admin center, change the display name for Test.User@contoso.com to Test.User1@contoso.com.
B.
Run the following Windows PowerShell command:
Get-MsolUser –UserPrincipalName Test.User@contoso.com | Set-MsolUser –UserPrincipalName Test.User1@contoso.com
C.
In the Office 365 admin center, add the SMTP address Test.User1@contoso.com to Test.User@contoso.com
D.
Run the following Windows PowerShell command:
Set-MsolUserPrincipalName –UserPrincipalName Test.User@contoso.com –NewUserPrincipalName Test.User1@contoso.com
Explanation:
The Set-MsolUserPrincipalName cmdlet is used to change the User Principal Name (user ID) of a user.Example: The following command renames user1@contoso.com to CCole@contoso.com.
Set-MsolUserPrincipalName -UserPrincipalName User1@contoso.com -NewUserPrincipalName CCole@contoso.com
Set-MsolUserPrincipalName
https://msdn.microsoft.com/en-us/library/azure/dn194135.aspx
I dont think any of these are right. Command is this:
Set-CsUser –Identity Davindk -SipAddress “sip:David.King@test.com”
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This command works for on-premise, not for online. And “You have an Office 365 tenant with Skype for Business Online”.
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Actually, there is another set of answers;
A. Set-Mailbox-Identity$ID-PrimarySmtpAddress$NewAddress
B. Set-MsolUser-UserPrincipalName$ID–ProxyAddresses@{add=”$NewAddress”; remove =”$Old Address”}
C. Set-CsUser -Identity $ID –ProxyAddresses @{add=”$NewAddress’’; remove=”$OldAddress”}
D. Set-CsUser –Identity $ID –SipAddress $NewAddress
Correct Answer: D
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Exactly.
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I just verified and when you run a Get-CsOnlineUser. Using Microsoft lab case below to show you.
1. Original Name (type my bad from the start FranSisco instead of FranCisco.
Get-CsOnlineUser -Identity “Fransisco” | select SipAddress, UserPrincipalName
SipAddress UserPrincipalName
———- —————–
sip:Fransisco@AdatumLOD39834.onmicrosoft.com Fransisco@AdatumLOD39834.onmicrosoft.com
2. Change the name using answer supplied by this question
Set-MsolUserPrincipalName -UserPrincipalName Fransisco@AdatumLOD39834.onmicrosoft.com -NewUserPrincipalName “Francisco@AdatumLOD39834.onmicrosoft.com”
3. After waiting about 3 minutes this was the result.
Get-CsOnlineUser -Identity “Francisco” | select SipAddress, UserPrincipalName
SipAddress UserPrincipalName
———- —————–
sip:Francisco@AdatumLOD39834.onmicrosoft.com Francisco@AdatumLOD39834.onmicrosoft.com
So in conclusion D is correct! When you change the users UPN it is auto populated to Skype for Business Online
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They do not request to change the UserPrincipalName, they request to change the SIP address, the condition is “You configure the account to use the same email address
and Session Initiation Protocol (SIP) address. “So if the SMTP is changed, the SIP address will be changed when it is synchronized, for me the option is C.
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