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.
To resolve this problem, follow these steps:
- Open the Exchange Management Shell.
- Run the following command to clear the external IP addresses from the hybrid configuration:
Get-HybridConfiguration | Set-HybridConfiguration -ExternalIPAddresses $null
- Run the Hybrid Configuration wizard again.