This update is no longer available. To fix the issues that are described in this article, install the latest Microsoft Exchange Server update from the following Microsoft Learn article:
Exchange Server build numbers and release dates
Microsoft provides download files only for N-2 versions for an Exchange Server cumulative update (CU), where "N" is the latest CU. The latest CU can be used to recover servers that are running Exchange Server. This includes servers that have a previous CU installed.
Cumulative Update 8 for Microsoft Exchange Server 2016 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 2016.
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:
4056329 Can't access EWS from Outlook/OWA add-ins via makeEwsRequestAsync in Exchange Server 2016 and Exchange Server 2013
4054516 "Your request can't" error when accessing an archive mailbox via OWA in Exchange Server 2016
4055953 The recipient scope setting doesn't work for sibling domains in Exchange Server 2016
4055435 No MAPI network interface is found after you install Exchange Server 2016 CU7
4045655 Description of the security update for Microsoft Exchange: December 12, 2017
4057248 Many Watson reports for StoragePermanentException in Exchange Server 2016
Known issues in this cumulative update
After you install Cumulative Update 8 for Exchange Server 2016, the Accept button disappears in the invitation email message of a shared calendar in Outlook Web App (OWA). Therefore, you cannot add the shared calendar by clicking the Accept button directly. To work around this issue, you can use one of the following methods:
Open the invitation from the Notifications pane in OWA.
Add the shared calendar manually in OWA. For more information, see How to open a shared calendar from an Outlook sharing invitation.
Open the invitation in Outlook, and then add the shared calendar.
For more information about the deployment of Exchange Server 2016, see Release notes for Exchange 2016.
For more information about the coexistence of Exchange Server 2016 and earlier versions of Exchange Server in the same environment, see Exchange 2016 system requirements.
For more information about other Exchange updates, see Exchange Server Updates: Build numbers and release dates.
Learn about the terminology that Microsoft uses to describe software updates.