DYNAMICS 365 TLS 1.2 – Microsoft Dynamics 365 V9 New Features

Microsoft Dynamics 365 V9 Security Update TLS 1.2 ( .NET 4.5.2/4.6.2)

In this article we will learn about Dynamics 365 TLS 1.2 – Microsoft Dynamics 365 V9 Security Update TLS 1.2 ( .NET 4.5.2/4.6.2)

• Overview
• What is TLS ?
• What is changing?
• How will you or your customers be impacted?
• Demo (Simulating the Problem)
• Demo (Problem Resolution)
• References

Overview

Microsoft has recently announced that

“In Dynamics 365 (online) version 9.x and Dynamics 365 (online) Government version 8.2, we will begin requiring connections to customer engagement applications to utilize TLS 1.2 (or better) security. This aligns with updated Microsoft and industry security policies and best practices, and you may be required to take actions to maintain connectivity to Dynamics 365 Customer Engagement applications”

What is TLS ?

• TLS stands for “Transport Layer Security,” and is a protocol that is an industry standard designed to protect the privacy of information communicated over the Internet. TLS is used in many web browsers and applications that communicate over HTTPS and TCP.
• TLS has two layers,
  1. TLS Record Protocol, which provides security, and
  2. TLS Handshake Protocol, which allows the apps to authenticate.
• The primary goal of the TLS protocol is to provide privacy and data integrity between two communicating applications.
• TLS is supported by the Microsoft .NET Framework in the following ways:
  • .NET 4.0 supports TLS 1.0
  • .NET 4.5+ supports TLS1.2 through a code update
  • .NET 4.6+ supports TLS 1.2 by default

What is changing with DYNAMICS 365 TLS 1.2 ?

• Today, all Dynamics 365 Customer Engagement online versions support TLS 1.0, 1.1 and 1.2, but starting with the release of Dynamics 365 (online) version 9.x and Dynamics 365 (online) Government version 8.2, Microsoft will begin blocking connections to the updated product from clients or browsers that are using TLS 1.0 and 1.1.
• Please note: This change only affects Microsoft Dynamics 365 Online Customer Engagement, not on premises versions.

How will you or your customers be impacted?

• All supported browsers for Dynamics 365 Customer Engagement (versions 7.x – Version 9.x) currently comply with the TLS 1.2 standards and will continue to work as before. However, if you have disabled the TLS 1.2 protocol on your browser, you will be affected and lose connectivity to organizations. 
• For help identifying if your browser supports the TLS 1.2 requirement, go to this validation test page.
• For code built with the Dynamics 365 SDK : Recompile your client applications using .NET framework 4.6.2 or higher.  If your code is already compiled with .net 4.6.2 or higher, then there is no action required. For custom plugins and workflow assemblies, .net 4.5.2 should continue to be used.

References

• https://support.microsoft.com/en-us/help/4051700
• https://carldesouza.com/dynamics-365-tls-1-2-how-to-fix-apps/
• http://vjcity.blogspot.com/2018/04/microsoft-dynamic-crm-v90-and-tls-and.html

Also Read More Here:

• http://www.dynamixacademy.com/microsoft-dynamics-365-online-admin-api/
• How to Debug Asynchronous Workflow in Dynamics 365
• Impersonation In Microsoft Dynamics 365/CRM Plugins
• Microsoft Dynamics CRM/365 Interview Question and Answers

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