Policy
Deny delegating default credentials
Microsoft Windows
Policy overview
Key metadata and intent for this policy.
Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista
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.
Registry values
How enabled and disabled states update the registry.
| Scope | Registry location | Type | Enabled value | Disabled value | Copy |
|---|---|---|---|---|---|
| Computer | Path Software\Policies\Microsoft\Windows\CredentialsDelegation Value name DenyDefaultCredentials | REG_DWORD | HKLM 1 | HKLM 0 |
Policy elements
Inputs and configuration options exposed by this policy.
| Scope | Element | Type | Registry mapping | Constraints & behavior | Copy |
|---|---|---|---|---|---|
| Computer | Concatenate OS defaults with input above ID ConcatenateDefaults_DDC | boolean | Path Software\Policies\Microsoft\Windows\CredentialsDelegation Value name ConcatenateDefaults_DenyDefault Type REG_DWORD | Options: true (1), false (0) True: Set value = 1 · False: Set value = 0 | |
| Computer | Add servers to the list: ID DenyDefaultCredentials_Name | list | Path Software\Policies\Microsoft\Windows\CredentialsDelegation\DenyDefaultCredentials Value name DenyDefaultCredentials Type REG_MULTI_SZ | List: additive |