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    <title>[MS-OXOCAL]: Appointment and Meeting Object Protocol</title>
    <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
    <description>Specifies the Appointment and Meeting Object Protocol, which extends the Message and Attachment Object Protocol for use with calendaring.</description>
    <item>
      <title>Minor Update for [MS-OXOCAL] (Version 21.1)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 21.1&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL].pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-250218.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 18 Feb 2025</pubDate>
      <guid>MS-OXOCAL-20250218</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 21.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 21.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-240820.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-240820.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 20 Aug 2024</pubDate>
      <guid>MS-OXOCAL-20240820</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 20.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 20.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210817.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210817.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 17 Aug 2021</pubDate>
      <guid>MS-OXOCAL-20210817</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 19.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 19.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210422.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210422.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Thu, 22 Apr 2021</pubDate>
      <guid>MS-OXOCAL-20210422</guid>
    </item>
    <item>
      <title>Minor Update for [MS-OXOCAL] (Version 18.1)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 18.1&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190327.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190327.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Wed, 27 Mar 2019</pubDate>
      <guid>MS-OXOCAL-20190327</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 18.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 18.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190319.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190319.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 19 Mar 2019</pubDate>
      <guid>MS-OXOCAL-20190319</guid>
    </item>
    <item>
      <title>Minor Update for [MS-OXOCAL] (Version 17.1)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 17.1&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181211.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181211.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 11 Dec 2018</pubDate>
      <guid>MS-OXOCAL-20181211</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 17.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 17.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181001.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181001.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Mon, 01 Oct 2018</pubDate>
      <guid>MS-OXOCAL-20181001</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 16.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 16.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-180724.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-180724.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 24 Jul 2018</pubDate>
      <guid>MS-OXOCAL-20180724</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 15.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 15.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-171212.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-171212.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 12 Dec 2017</pubDate>
      <guid>MS-OXOCAL-20171212</guid>
    </item>
    <item>
      <title>Major Update for [MS-OXOCAL] (Version 14.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 14.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-170919.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-170919.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Tue, 19 Sep 2017</pubDate>
      <guid>MS-OXOCAL-20170919</guid>
    </item>
    <item>
      <title>No Update for [MS-OXOCAL] (Version 13.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 13.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-161017.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-161017.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Mon, 17 Oct 2016</pubDate>
      <guid>MS-OXOCAL-20161017</guid>
    </item>
    <item>
      <title>No Update for [MS-OXOCAL] (Version 13.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 13.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160914.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160914.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Wed, 14 Sep 2016</pubDate>
      <guid>MS-OXOCAL-20160914</guid>
    </item>
    <item>
      <title>No Update for [MS-OXOCAL] (Version 13.0)</title>
      <link>https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1</link>
      <description>&lt;b&gt;Protocol Revision:&lt;/b&gt; 13.0&lt;br/&gt;&lt;b&gt;Downloads:&lt;/b&gt;&lt;br/&gt;&lt;ul style="list-style-type: square;"&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160613.pdf"&gt;PDF&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160613.docx"&gt;DOCX&lt;/a&gt;&lt;/li&gt;&lt;/ul&gt;</description>
      <pubDate>Mon, 13 Jun 2016</pubDate>
      <guid>MS-OXOCAL-20160613</guid>
    </item>
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