First steps before you start migrating users from Lync Online to Lync on-premises in Lync Server 2013

Topic Last Modified: 2014-05-08

Before you start moving Lync Online users to your on-premises environment, check that all of the following are true:

Your Lync Server on-premises environment must be fully deployed and validated. For more information, see Deploying Lync Server 2013.
Your Lync Online tenant must be configured for remote PowerShell Access.

To do this, first install the Lync Online module for Windows PowerShell, which you can get here: https://go.microsoft.com/fwlink/p/?LinkId=391911.

After you install the module, you can establish a remote session by typing the following cmdlets in the Lync Server Management Shell:
```
 Import-Module LyncOnlineConnector
```
```
 $cred = Get-Credential
```
```
 $CSSession = New-CsOnlineSession -Credential $cred
```
```
 Import-PSSession $CSSession -AllowClobber
```
For more information about how to establish a remote PowerShell session with Lync Online, see Connecting to Lync Online by using Windows PowerShell.

For more information about using the Lync Online PowerShell module, see Using Windows PowerShell to manage Lync Online.
Your Lync Online must be configured for Shared SIP Address Space. To do this, first start a remote Powershell session with Lync Online. Then run the following cmdlet:
```
Set-CsTenantFederationConfiguration -SharedSipAddressSpace $True
```

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