The certificate bundle configuration needs to point to a local file containing a Base64-encoded X.509 certificate store in PEM format, with the full chain of certificates: the Root Certificate Authority, Intermediate Certificate Authority, and server certificate (in that order).
To create such a file:
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Navigate to the HTTPS URL in your web browser. View the certificate chain.
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Open the Windows Certificate Store in the Microsoft Management Console. Find each relevant certificate, and select Action > All Tasks > Export.
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Save each certificate as a Base-64 encoded X.509 (.CER) file.
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Create a new file in a text editor, and copy the contents of the other files into it.
Ensure that all the URLs use HTTPS. If they use HTTP, you will encounter an SSL Protocol Error because j5 will attempt to communicate with HTTPS.