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The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel

I am facing the above error in MABS (Microsoft Azure BizTalk Services).

Any particular solution for this?

According to my knowledge it may be either a certificate error or an database access error. I am getting this while deploying where as building is successful.

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1 Answers

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It's very likely your ACS namespace, issuer, or access key is incorrect. Building wouldn't give you this error, as building is only done in the local environment. Deploying actually makes a secure connection with MABS so upload your assemblies.

Another option to check would be to make sure that your current firewall rules allow for the proper connections.