Error:Duplicate (potentially the shorter NETBIOS) name exists on the network.you should choose a different name…”

When trying to rename a domain controller to a name of an old domain control you receive the error below:

Duplicate (potentially the shorter NETBIOS) name exists on the network.you should choose a different name…”

To fix the Issue open command prompt and type:

Rename the old DC (If you demoted and removed it from the domain and it’s still on the network you have to rename it)

Run

nbtstat –rr

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Categorized as KB