HTTP Call to an Azure Function raised SSL connection could not be established but SSL certificate is valid

Question

I have a standard logic app that has a HTTP Call to an Azure Function. It was working before and suddenly, it failed and raised error the "The SSL connection could not be established". I have already confirmed the the SSL certificate is valid. I also tried calling the http azure function outside logic apps and it is working. Can you tell me where/what else should I be checking?

Answer 1

@Rachel I Welcome to Microsoft Q&A Forum, Thank you for posting your query here!

I understand you are facing an issue with a standard logic app that has an HTTP call to an Azure Function. The HTTP call was working before but suddenly failed and raised an error The SSL connection could not be established.

Plan 1:
Could you please confirm if you have downloaded and saved the full path certificates (root, intermediate, cert) locally, then upload the 3 certificate to Public Key Certificates in logic app standard as below

Then we need to add 3 thumbprints on WEBSITE_LOAD_ROOT_CERTIFICATES key, as comma separated as below:

The public key of the certificate must have been uploaded to Logic App as well. This is documented in the official documentation

Plan 2:

If the Storage Account is within a firewall, check that the VNET/Subnet that's associated with the Logic App is whitelisted on the Storage Account

• Check in App Settings
• Add WEBSITE_CONTENTOVERVNETwith Value 1

Plan 3:

Please follow the steps mentioned in this article.

Hope this helps. If you still encounter the issue after following all the above, please do let me know. I would be happy to assist you further.

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