"HCW8018 The external IP addresses on the Hybrid Configuration Active Directory object were not properly cleared" error when you run the Hybrid Configuration wizard

Applies to: Exchange OnlineExchange Server 2013 EnterpriseExchange Server 2013 Standard Edition

PROBLEM


When you run the Hybrid Configuration wizard, you receive the following error message:

HCW8018 The external IP addresses on the Hybrid Configuration Active Directory object were not properly cleared during the upgrade of the hybrid configuration.

SOLUTION


To resolve this problem, follow these steps:

  1. Open the Exchange Management Shell.
  2. Run the following command to clear the external IP addresses from the hybrid configuration:
    Get-HybridConfiguration | Set-HybridConfiguration -ExternalIPAddresses $null 
  3. Run the Hybrid Configuration wizard again.

MORE INFORMATION


Still need help? Go to Microsoft Community or the Exchange TechNet Forums.