Home > CRM SDK, Dynamics 365, Security > Dynamics 365 – Important Dynamics 365 Security Changes for TLS

Dynamics 365 – Important Dynamics 365 Security Changes for TLS

In summary, with the release of the Dynamics 365 v9.0, Microsoft are now enforcing the use of the Transport Layer Security (TLS) v1.2 + only, all older TLS connections will fail.

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

What will happen if I ignore this?

Any connections you have to the Dynamics 365 Online instance of version 9.0 and above will fail if they do not use TLS 1.2 and above security protocol. This does not affect On-Premises installations of Dynamics 365.

How do I find out more?

Microsoft has made some announcements of these changes publically, which can be found at the links below:

https://support.microsoft.com/en-us/help/4051700

https://blogs.msdn.microsoft.com/crm/2017/09/28/updates-coming-to-dynamics-365-customer-engagement-connection-security/

Hope this helps!

Greg Olsen
YellowDuckGuy

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Categories: CRM SDK, Dynamics 365, Security
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