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home/Knowledge Base/*News and General Infos*/Error message during Dynamics 365 Connection setup with Ws-Trust endpoint authentication

Error message during Dynamics 365 Connection setup with Ws-Trust endpoint authentication

1505 views 0 Updated on July 26, 2022

If you try to setup a connection, an error could occur when processing the security tokens and you will not be connected:

“You are using Ws-Trust authentication which has been deprecated and no longer supported in your environment. Please use oAuth2.0 authentication.”

Due to security concerns, Microsoft stopped the “Ws-Trust” endpoint authentication without replacement. So please “Prefer the Server2Server” authentication and don´t forget to disable “Use local Discovery” and you will be able to connect again.


Figure 1: Connection setup

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