CryptVerifyCertificateSignatureEx returned error 0x80090006 – What Does This Mean?

CryptVerifyCertificateSignatureEx returned error 0x80090006 – What Does This Mean?

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[Today's post comes to us courtesy of Carol Bailey

We've seen a few customer worried by this log entry in MPControl.log and CCMExec.log when the Configuration Manager site is in native mode.  It looks bad, but actually it's a "good" error.  We're checking whether the certificate is self-signed, and it's not, so throwing this error.  Native mode won't work with a self-signed certificate, so this error is a sign that things are good!

We've answered this question a couple of times on the forums, but still see questions on it - so hopefully posting a blog with the actual error in the title will help people find it more easily.

 - Carol Bailey

This posting is provided "AS IS" with no warranties, and confers no rights.

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  • Can there be such a thing as a GOOD error message? Well in the case of the “CryptVerifyCertificateSignatureEx

  • Can there be such a thing as a GOOD error message? Well in the case of the “CryptVerifyCertificateSignatureEx

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  • Thanks alot, this reduces on my work as i look out for errors that are causing my server not to respond to clients.