Deny delegating default credentials

This policy setting applies to applications using the Cred SSP component (for example: Remote Desktop Connection).

If you enable this policy setting, you can specify the servers to which the user's default credentials cannot be delegated (default credentials are those that you use when first logging on to Windows).

If you disable or do not configure (by default) this policy setting, this policy setting does not specify any server.

Note: The "Deny delegating default credentials" policy setting can be set to one or more Service Principal Names (SPNs). The SPN represents the target server to which the user credentials cannot be delegated. The use of a single wildcard character is permitted when specifying the SPN.

For Example:
TERMSRV/host.humanresources.fabrikam.com Remote Desktop Session Host running on host.humanresources.fabrikam.com machine
TERMSRV/* Remote Desktop Session Host running on all machines.
TERMSRV/*.humanresources.fabrikam.com Remote Desktop Session Host running on all machines in .humanresources.fabrikam.com

This policy setting can be used in combination with the "Allow delegating default credentials" policy setting to define exceptions for specific servers that are otherwise permitted when using wildcard characters in the "Allow delegating default credentials" server list.

Supported on: At least Windows Vista
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\CredentialsDelegation
Value NameDenyDefaultCredentials
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

Add servers to the list:

Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\CredentialsDelegation\DenyDefaultCredentials
Value Name{number}
Value TypeREG_SZ
Default Value
Concatenate OS defaults with input above
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Microsoft\Windows\CredentialsDelegation
Value NameConcatenateDefaults_DenyDefault
Value TypeREG_DWORD
Default Value1
True Value1
False Value0

credssp.admx

Administrative Templates (Computers)

Administrative Templates (Users)