[MS-ECREST]: Unified Communications Event Channel Protocol https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a Specifies the Skype for Business Event Channel REST Protocol, which describes a mechanism that web applications can use to retrieve notifications about changes to resources. Major Update for [MS-ECREST] (Version 6.0) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 6.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST].pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-210817.docx">DOCX</a></li></ul> Tue, 17 Aug 2021 MS-ECREST-20210817 No Update for [MS-ECREST] (Version 5.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 5.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-190924.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-190924.docx">DOCX</a></li></ul> Tue, 24 Sep 2019 MS-ECREST-20190924 No Update for [MS-ECREST] (Version 5.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 5.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-190319.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-190319.docx">DOCX</a></li></ul> Tue, 19 Mar 2019 MS-ECREST-20190319 Minor Update for [MS-ECREST] (Version 5.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 5.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-181211.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-181211.docx">DOCX</a></li></ul> Tue, 11 Dec 2018 MS-ECREST-20181211 Major Update for [MS-ECREST] (Version 5.0) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 5.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180828.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180828.docx">DOCX</a></li></ul> Tue, 28 Aug 2018 MS-ECREST-20180828 Major Update for [MS-ECREST] (Version 4.0) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 4.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180724.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180724.docx">DOCX</a></li></ul> Tue, 24 Jul 2018 MS-ECREST-20180724 Major Update for [MS-ECREST] (Version 3.0) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 3.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180427.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-180427.docx">DOCX</a></li></ul> Fri, 27 Apr 2018 MS-ECREST-20180427 Minor Update for [MS-ECREST] (Version 2.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 2.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-170919.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-170919.docx">DOCX</a></li></ul> Tue, 19 Sep 2017 MS-ECREST-20170919 Major Update for [MS-ECREST] (Version 2.0) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 2.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-161215.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-161215.docx">DOCX</a></li></ul> Thu, 15 Dec 2016 MS-ECREST-20161215 No Update for [MS-ECREST] (Version 1.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 1.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-160914.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-160914.docx">DOCX</a></li></ul> Wed, 14 Sep 2016 MS-ECREST-20160914 Minor Update for [MS-ECREST] (Version 1.1) https://docs.microsoft.com/en-us/openspecs/office_protocols/MS-ECREST/4454be95-159a-4c99-a75a-5c260609343a <b>Protocol Revision:</b> 1.1<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-160715.pdf">PDF</a></li><li><a href="https://interoperability.blob.core.windows.net/files/MS-ECREST/[MS-ECREST]-160715.docx">DOCX</a></li></ul> Fri, 15 Jul 2016 MS-ECREST-20160715