# Cannot create Exchange Online Migration Endpoint with Exchange 2007 Server using only NTLM Authentication

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I’ve been battling an issue for a few days now and finally stumbled upon a workable solution via PowerShell.

# Scenario

One of my customers has an existing Exchange 2007 deployment.  The OWA instance is configured to only use NTLM authentication.  ExRCA (http://www.testexchangeconnectivity.com) comes back clean, and I can proxy log in to any mailbox on the server.

When configuring the migration endpoint through the Office 365 Exchange Admin Center, I would receive an error that the migration endpoint could not be discovered, even after entering the credentials, server, and RPC proxy server values manually.

# Solution

The solution ended up with my old friend PowerShell.  You can create migration endpoints through it using the New-MigrationEndpoint cmdlet.  The key was forcing the authentication to NTLM.

New-MigrationEndpoint -ExchangeOutlookAnywhere -Name NewEndPointName -ExchangeServer EXCHSERVER.DOMAIN.local -RpcProxyServer OWA.DOMAIN.com -Credentials (get-credential onpremiseaccount@domain.com) -EmailAddress onpremiseaccount@domain.com -SkipVerification -Authentication NTLM

### Published by Aaron Guilmette

Helping companies conquer inferior technology since 1997. I spend my time developing and implementing technology solutions so people can spend less time with technology. Specialties: Active Directory and Exchange consulting and deployment, Virtualization, Disaster Recovery, Office 365, datacenter migration/consolidation, cheese.

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