Error "PKIX path building failed" Occurs When Connecting Tableau Server to Data Via Proxy

To resolve this issue, import the proxy server’s root certificate into the system-wide trust store of the operating system (OS) where Tableau Server is running. Doing so ensures that all applications on the OS—including Tableau Server—can recognize and trust the certificate presented by the proxy server.

General Steps (Common to all OS)

1. Copy the proxy server's root certificate file (e.g., .crt, .cer) to the Tableau Server machine.
2. Follow the OS-specific steps to import the certificate into the system-wide trust store (Linux) or the Trusted Root Certification Authorities store (Windows).
3. After importing the certificate, try connecting to data again.

Note: The steps for importing a certificate vary by operating system. For detailed, platform-specific instructions, consult the official documentation for your OS or contact your system administrator.

For Linux: 

Commands differ by Linux distribution (e.g., Red Hat Enterprise Linux, Ubuntu, CentOS). Below is a reference for Red Hat Enterprise Linux 8:

• Adding a new certificate to the system-wide trust store (Red Hat Official Documentation)

For Windows Server: 

Importing is commonly done using the Certificate Management Console (MMC) or the Certificate Import Wizard. For detailed instructions, refer to Microsoft's official documentation:

• How to: View certificates with the MMC snap-in (Microsoft Learn)

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