https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 Specifies the Appointment and Meeting Object Protocol, which extends the Message and Attachment Object Protocol for use with calendaring. https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 21.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL].pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-240416.docx">DOCX</a></li></ul> Tue, 16 Apr 2024 MS-OXOCAL-20240416 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 20.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210817.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210817.docx">DOCX</a></li></ul> Tue, 17 Aug 2021 MS-OXOCAL-20210817 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 19.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210422.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-210422.docx">DOCX</a></li></ul> Thu, 22 Apr 2021 MS-OXOCAL-20210422 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 18.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190327.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190327.docx">DOCX</a></li></ul> Wed, 27 Mar 2019 MS-OXOCAL-20190327 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 18.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190319.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-190319.docx">DOCX</a></li></ul> Tue, 19 Mar 2019 MS-OXOCAL-20190319 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 17.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181211.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181211.docx">DOCX</a></li></ul> Tue, 11 Dec 2018 MS-OXOCAL-20181211 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 17.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181001.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-181001.docx">DOCX</a></li></ul> Mon, 01 Oct 2018 MS-OXOCAL-20181001 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 16.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-180724.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-180724.docx">DOCX</a></li></ul> Tue, 24 Jul 2018 MS-OXOCAL-20180724 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 15.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-171212.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-171212.docx">DOCX</a></li></ul> Tue, 12 Dec 2017 MS-OXOCAL-20171212 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 14.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-170919.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-170919.docx">DOCX</a></li></ul> Tue, 19 Sep 2017 MS-OXOCAL-20170919 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 13.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-161017.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-161017.docx">DOCX</a></li></ul> Mon, 17 Oct 2016 MS-OXOCAL-20161017 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 13.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160914.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160914.docx">DOCX</a></li></ul> Wed, 14 Sep 2016 MS-OXOCAL-20160914 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-OXOCAL/09861fde-c8e4-4028-9346-e7c214cfdba1 <b>Protocol Revision:</b> 13.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160613.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-OXOCAL/[MS-OXOCAL]-160613.docx">DOCX</a></li></ul> Mon, 13 Jun 2016 MS-OXOCAL-20160613