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The !sid extension displays the security identifier (SID) at the specified address.

Syntax in Windows 2000:

    !sid Address 

Syntax in Windows XP and later

    !sid Address [Flags] 



Specifies the address of the SID structure.


(Windows XP and later) If this is set to 1, the SID type, domain, and user name for the SID is displayed.

(Windows XP and later) If this is set to 1, the friendly name is displayed. This includes the SID type, as well as the domain and user name for the SID.


Windows 2000


Windows XP and later



Additional Information

For information about SIDs, see the Microsoft Windows SDK documentation, the Windows Driver Kit (WDK) documentation, or Microsoft Windows Internals by Mark Russinovich and David Solomon. Also see !sd and !acl.


Here are two examples, one without the friendly name shown, and one with:

kd> !sid 0xe1bf35b8
SID is: S-1-5-21-518066528-515770016-299552555-513

kd> !sid 0xe1bf35b8 1
SID is: S-1-5-21-518066528-515770016-299552555-513 (Group: MYGROUP\Domain Users)



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