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<div id="preamble"><h1>Apache MPM winnt</h1>
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<p><span>Available Languages: </span><a href="../de/mod/mpm_winnt.html" hreflang="de" rel="alternate" title="Deutsch">&nbsp;de&nbsp;</a> |
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>This Multi-Processing Module is optimized for Windows
NT.</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>MPM</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>mpm_winnt_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mpm_winnt.c</td></tr></table>
<h3>Summary</h3>

    <p>This Multi-Processing Module (MPM) is the default for the
    Windows NT operating systems. It uses a single control process
    which launches a single child process which in turn creates
    threads to handle requests</p>
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<div id="quickview"><h3 class="directives">Directives</h3>
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<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#coredumpdirectory">CoreDumpDirectory</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listen">Listen</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#listenbacklog">ListenBacklog</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxmemfree">MaxMemFree</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#maxrequestsperchild">MaxRequestsPerChild</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#pidfile">PidFile</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#receivebuffersize">ReceiveBufferSize</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#scoreboardfile">ScoreBoardFile</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#sendbuffersize">SendBufferSize</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadlimit">ThreadLimit</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadsperchild">ThreadsPerChild</a></li>
<li><img alt="" src="../images/right.gif" /> <a href="mpm_common.html#threadstacksize">ThreadStackSize</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#win32disableacceptex">Win32DisableAcceptEx</a></li>
</ul>
<h3>See also</h3>
<ul class="seealso">
<li><a href="../platform/windows.html">Using Apache HTTP Server on Microsoft Windows</a></li>
</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>

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<div class="directive-section"><h2><a name="Win32DisableAcceptEx" id="Win32DisableAcceptEx">Win32DisableAcceptEx</a> <a name="win32disableacceptex" id="win32disableacceptex">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Use accept() rather than AcceptEx() to accept network connections</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>Win32DisableAcceptEx</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AcceptEx() is enabled by default. Use this directive to disable use of
    AcceptEx()</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>MPM</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mpm_winnt</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in Version 2.0.49 and later</td></tr>
</table>
    <p><code>AcceptEx()</code> is a Microsoft WinSock v2 API that provides
    some performance improvements over the use of the BSD style
    <code>accept()</code> API in certain circumstances. Some popular Windows
    products, typically virus scanning or virtual private network
    packages, have bugs that interfere with the proper operation of
    <code>AcceptEx()</code>. If you encounter an error condition like:</p>

    <div class="example"><p><code>
        [error] (730038)An operation was attempted on something that is
        not a socket.: winnt_accept: AcceptEx failed. Attempting to recover.
    </code></p></div>

    <p>you should use this directive to disable the use of
    <code>AcceptEx()</code>.</p>

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