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Could not establish trust relationship for the SSL/TLS secure channel




We are trying to monitor URLs [HTTP requests] with the EXE script sensor and script on this page https://kb.paessler.com/en/topic/47373-can-i-check-for-specific-http-response-codes-with-prtg. I have been getting "Query Failed: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel" in 4 out of the 6 URLs that we are trying to monitor. I am setting the URL as "https://......URL....." How can I by-pass this error ? Is there an alternate to the sensor that I set up ?

exe-script-sensor https ssl-tls-error

Created on Sep 4, 2020 6:25:25 PM

1 Reply




Thank you for your post.

This seems to be a issue with the certificate that is being used. A similar issue is being discussed (and a workaround is provided) here: https://stackoverflow.com/questions/11696944/powershell-v3-invoke-webrequest-https-error/15841856

You would have to adjust the script so that it trusts all certificates, this way avoiding the error.

Kind regards,
Sasa Ignjatovic, Tech Support Team

Created on Sep 7, 2020 8:59:19 AM by  Sasa Ignjatovic [Paessler Support]

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