DAG issues on Exchange 2010

Error description:

Cannot find any matching networks for the DatabaseAvailabilityGroupIpAddresses on server servername. To use a dynamically assigned IP address, omit the DatabaseAvailabilityGroupIPAddress parameter.


Solution 1: Validate the cluster and solve existing issues
possible issues are:

  • duplicate APIPA addresses on network interfaces that aren't connected

  • IPv6 not disabled in the registry -> it must be disabled
  • To disable IPv6 components, follow these steps:
    • In Registry Editor, locate and then click the following registry subkey:
  • modify the DisabledComponents DWORD value to 0x01 or create it ( source )

Solution 2: Remove the node from the cluster

  1. Evict the node from the cluster if necessary
  2. reinstall the failover clustering feature