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Asked: 2025-02-13 06:12:29 +0800 CST

Configure RDP to use correct security certificate in Windows Server 2022

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Working on fixing the "certificate is not from a trusted authority" error when logging on to RDP against a Server 2022 instance. It's thinking I am using a self-signed certificate, however I have a valid certificate from InCommon.

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As mentioned, I have the correct PEM encoded security certificate from a valid provider.

I added this certificate to Console - Remote Desktop - Certificates:

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Rebooted for good measure, but am still getting the same "certificate is not from a trusted certifying authority" error.

What steps am I missing?

certificate

1 Answers

  1. Best Answer

    Got it sorted. I had to import a certificate with embedded key (as .pfx) in Console -> Personal -> Certificates. It successfully imported, and after refresh appears in my list of certs. In my previous attempts, I was trying to add a .crt without an embedded key - think that's where I was going wrong.

    I then was able to issue this wmic command to configure the cert for RDP.

    wmic /namespace:\root\CIMV2\TerminalServices PATH Win32_TSGeneralSetting Set SSLCertificateSHA1Hash="MyCertThumbnail"

    Finally, restarted RDP service and am able to log in to RDP without the certificate error.

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