<div class="content" name="RpcLogonIdFromWinStationName" uuid="b1397fda-d4f2-4355-a936-ca44ef4dc440"><p>The RpcLogonIdFromWinStationName method returns a session&#39;s
session ID given its session name. The caller MUST have WINSTATION_QUERY
permission. The method checks whether the caller has WINSTATION_QUERY
permission (section <span><a href="4507e852-be3d-45b6-bc47-8ca0b552c94d" data-linktype="relative-path">3.1.1</a></span>) by setting
it as the Access Request mask, and fails if the caller does not have the
permission.<a id="Appendix_A_Target_178"></a><a aria-label="Product behavior note 178" href="7ce7f717-461b-4f18-9829-6690168c7707#Appendix_A_178" data-linktype="relative-path">&lt;178&gt;</a></p><dl>
<dd>
<div><pre> BOOLEAN RpcLogonIdFromWinStationName(
   [in] SERVER_HANDLE hServer,
   [out] DWORD* pResult,
   [in, size_is(NameSize)] PWCHAR pWinStationName,
   [in, range(0, 256 )] DWORD NameSize,
   [out] DWORD* pLogonId
 );
</pre></div>
</dd></dl><p><b>hServer: </b>The Handle to the server object. This
is of type <span><a href="49484cdf-2feb-4de9-a588-5d01cf8995dc" data-linktype="relative-path">SERVER_HANDLE</a></span>. hServer
MUST be obtained from a previous call to <span><a href="fd6f339d-f5dd-452c-a9a9-ec753c22a36a" data-linktype="relative-path">RpcWinStationOpenServer</a></span>.</p><p><b>pResult: </b> The failure error code if the call
to RpcLogonIdFromWinStationName fails. If the call is successful, this parameter
MUST be STATUS_SUCCESS (0x00000000).</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Value</p>
   </th>
   <th>
   <p>Meaning</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>STATUS_SUCCESS 0x00000000</td>
  <td>The call is successful.</td>
 </tr><tr>
  <td>STATUS_ACCESS_DENIED 0xC0000022</td>
  <td>The caller does not have permission for the operation.</td>
 </tr></tbody></table>
</dd></dl><p><b>pWinStationName: </b> The pointer to a buffer
holding the session name.</p><p><b>NameSize: </b> The length of the string in
characters pointed to by <i>pWinStationName</i> including the terminating NULL
character. MUST be less than or equal to <span><a href="ce70794f-2138-43e8-bf6c-2c147887d6a2" data-linktype="relative-path">WINSTATIONNAME_LENGTH</a></span>.</p><p><b>pLogonId: </b>The matching session ID for the
session specified by <i>pWinStationName</i>.</p><p><b>Return Values: </b> Returns TRUE if the call
succeeded, or FALSE if the method failed. On failure, <i>pResult</i> indicates
the failure status code.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>0x01 TRUE</td>
  <td>Successful completion.</td>
 </tr><tr>
  <td>0x00 FALSE</td>
  <td>Method call failed.</td>
 </tr></tbody></table>
</dd></dl><p> </p></div>