Microsoft Dynamics CRM Server upgrade preparations


Applies To: Dynamics 365 (on-premises), Dynamics CRM 2016

To prepare the upgrade, follow the guidelines in this section.

Microsoft Dynamics CRM 2015 roles aren’t compatible with a Microsoft Dynamics CRM 2016 deployment. Therefore, after you upgrade the first Microsoft Dynamics CRM Server 2015, other Microsoft Dynamics CRM 2015 servers that are running in the deployment will become disabled. As each server is upgraded, it will be enabled.


We recommend that for each organization that you upgrade, the volume have free space that is at least three times the size of the organization database file and four times the size of the log file. Therefore, if a single organization database and log file are located on the same volume and are one gigabyte in total, you should have at least seven gigabytes of available disk space before you perform the upgrade.

Estimate downtime due to upgrade

This section provides best practices for managing Microsoft Dynamics CRM deployment downtime that will be incurred during an upgrade.

  • Upgrade in a test environment to estimate the duration of downtime and determine issues that may occur as a result of the upgrade. More information: Upgrade the Microsoft Dynamics Deployment

  • Consider a phased approach to upgrade.

    • Microsoft Dynamics CRM Server upgrade only (binary upgrade). To do this, don’t specify an organization during the upgrade.


      After the Microsoft Dynamics CRM Server upgrade is complete, all Microsoft Dynamics CRM 2015 organizations are disabled and can’t be enabled until they are upgraded.

    • Upgrade organizations. Use the Import-CrmOrganizationWindows PowerShell command to upgrade each organization. More information: Administer the deployment using Windows PowerShell

      Alternatively, you can use Deployment Manager to individually upgrade each organization.

Software prerequisites

Before you run the upgrade, we recommend that you install or enable the following components on the computer where you will install Microsoft Dynamics CRM Server 2016 or on the computer where Microsoft Dynamics CRM will be migrated to:

  • .NET Framework 4.5.2

  • Microsoft SQL Server Native Client

  • Microsoft Application Error Reporting Tool

  • Microsoft URL Rewrite Module for IIS

If these components aren’t present when you run the upgrade, Setup will install them. However, to reduce the upgrade processing time, consider installing these components in advance. These components can be found in the redist folder of the Microsoft Dynamics CRM installation media.

See Also

Upgrade Microsoft Dynamics CRM Server
Upgrade from Microsoft Dynamics 2015 Server

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