PowerBI The underlying connection was closed:could not establish trust relationship for the SSL/TLS

[treesa_123]

Hi Team, 

I was trying to connect to REST API{URL-which is port forwarded setup} through the web option in power bi. I have got the token key using postman. I followed the configurations as below. Can you please help me resolve it.

[v-yangliu-msft]

Hi  @treesa_123 ,

Please follow this article to make sure both certificates and other settings are correct. 

You can try the following:

1. Clear the Secure Sockets Layer (SSL) state. To do this, follow these steps:

• In Internet Explorer, click Tools, and then click Internet Options.
• Click the Content tab, and then click Clear SSL state.

2. File -> Options and Setings -> -> Options -> Security -> Cetificate revocation

Best Regards,

Liu Yang

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[GilbertQ]

Hi @treesa_123 

To me the error indicates that there is an issue with the encryption and the SSL certificate where you are trying to connect to?