<div class="content"><p>The SourceMachineGuid method is received by the server in an
RPC_REQUEST packet. In response, the server MUST return the represented
Message.SourceMachineIdentifier.</p><dl>
<dd>
<div><pre> [propget] HRESULT SourceMachineGuid(
   [out, retval] BSTR* pbstrGuidSrcMachine
 );
</pre></div>
</dd></dl><p><b>pbstrGuidSrcMachine: </b>A pointer to a <a href="../ms-oaut/1c9d2cfc-cf7d-4f4b-95bf-584be5defd81" data-linktype="relative-path">BSTR</a>
that contains the <a href="3b7be3f7-651c-4f9c-930b-a9a7c4355ad8#gt_f49694cc-c350-462d-ab8e-816f0103c6c1" data-linktype="relative-path">GUID</a>
identifier of the computer that sent the <a href="3b7be3f7-651c-4f9c-930b-a9a7c4355ad8#gt_85c78cf0-1fb6-4e5d-85f5-a2e9f58a6b9e" data-linktype="relative-path">message</a>. The string MUST
adhere to the following format, specified using ABNF.</p><dl>
<dd>
<div><pre> guid       = dword-part &#34;-&#34; word-part &#34;-&#34; word-part 
              &#34;-&#34; 2byte-part &#34;-&#34; 6byte-part 
 dword-part = 2word-part
 word-part  = 2byte-part
 byte-part  = 2hex-digit
 hex-digit  = %x30-39 / %x41-46 / %x61-66
</pre></div>
</dd></dl><p><b>Return Values: </b>The method MUST return S_OK (0x00000000)
on success or an implementation-specific error <a href="../ms-dtyp/a9046ed2-bfb2-4d56-a719-2824afce59ac" data-linktype="relative-path">HRESULT</a>
on failure.</p><p>When processing this call, the <a href="3b7be3f7-651c-4f9c-930b-a9a7c4355ad8#gt_434b0234-e970-4e8c-bdfa-e16a30d96703" data-linktype="relative-path">server</a> MUST follow these
guidelines:</p><ul><li><p><span><span> 
</span></span>Set the <i>pbstrGuidSrcMachine</i> output parameter to the value
of the represented Message.SourceMachineIdentifier.</p>
</li></ul></div>