Software Update: Microsoft Exchange Server 2013 CU 19

Microsoft has already released the 19th Cumulative Update for Exchange Server 2013. Exchange Server 2013 was released in January 2013. Mainstream support from Microsoft will run until April 2018 and extended support will run until April 2023. Only security and time zone updates will be implemented during this extended period. For a general discussion about Exchange Server 2013, you can visit the General Exchange 2013 topic on our forum. The KB article with number 4037224 mentions the following changes:

Cumulative Update 19 for Exchange Server 2013

Cumulative Update 19 for Microsoft Exchange Server 2013 was released on December 19, 2017. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2013.

Issues that this cumulative update fixes

This cumulative update adds support for .NET Framework 4.7.1. This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles:

• 4046316 MAPI over HTTP can’t remove client sessions timely if using OAuth and the resource has a master account in Exchange Server 2013
• 4046205 W3wp high CPU usage in Exchange Server 2013
• 4046182 Event ID 4999 or 1007 if diagnostics service crashes repeatedly in Exchange Server 2013
• 4056329 Can’t access EWS from Outlook/OWA add-ins via makeEwsRequestAsync in Exchange Server 2016 and Exchange Server 2013
• 4045655 Description of the security update for Microsoft Exchange: December 12, 2017