The IP address %1 you have entered for this network adapter is already assigned to another adapter (%2) which is no longer ...

The IP address %1 you have entered for this network adapter is already assigned to another adapter (%2) which is no longer present in the computer.  If the same address is assigned to both adapters and they both become active, only one of them will use this address.  This may result in incorrect system configuration.   Do you want to remove the static IP configuration for the absent adapter?