[This is preliminary documentation and subject to change]

### UNCAuthenticationPassThrough

This property enables user authentication passthrough for Universal Naming Convention (UNC) virtual root access (for authentication schemes that support delegation).

Note Integrated Windows (NTLM) authentication does not support delegation.

Attribute Name | Attribute Value
Data Type | BOOL
Attributes | INHERIT
Default Value | FALSE
MetaFlagsEx | CACHE_PROPERTY_MODIFIED
User Type | IIS_MD_UT_FILE
StartingNumber |
EndingNumber | 0
ID | 3006

### Access Locations

This property is accessible at the following locations:

Metabase Path | IIS Admin Object Type
/LM/W3SVC/2 | IIsWebServer
/LM/W3SVC/Info/Templates/Public Web Site | IIsWebServer
/LM/W3SVC/Info/Templates/Secure Web Site | IIsWebServer
/LM/W3SVC | IIsWebService
/LM/W3SVC/1/ROOT | IIsWebVirtualDir
/LM/W3SVC/1/ROOT/_vti_bin | IIsWebVirtualDir
/LM/W3SVC/1/ROOT/IISAdmin | IIsWebVirtualDir
/LM/W3SVC/1/ROOT/IISHelp | IIsWebVirtualDir
/LM/W3SVC/1/ROOT/MSADC | IIsWebVirtualDir
/LM/W3SVC/1/ROOT/Scripts | IIsWebVirtualDir
/LM/W3SVC/2/ROOT | IIsWebVirtualDir
/LM/W3SVC/2/ROOT/IISAdmin | IIsWebVirtualDir

### IIS Admin Base Object Information

The following table lists additional information required only for code that uses the IIS Admin Base Object.

Metabase identifier | MD_VR_PASSTHROUGH
Data type | BOOL
User type | IIS_MD_UT_FILE

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