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Error: Communication with the CA has failed

Symptom:

When attempting to use a Microsoft CA template object that is incorrectly configured you may get the following (or similar) popup error:

MSCA_error.png

Commincation with the CA has failed, please check the settings before trying again.  System error:CCertAdmin:GetCAProperty:The parameter is incorrect.  0x80070057 (WIN32: 87)

or

Communication with the CA has failed, please check the settings before trying again.  System error: CCertAdmin:GetCAProperty:Class not registered 0x80040154 (-2147221164)

Cause:

This is likely due to the hostname and / or service name not being configured correctly.  Neither one can be left blank.

Resolution:

Review the hostname and service name settings and correct as needed.

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Comments

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    Tim Sawyer

    This error can also result from a slow DNS resolution. If the parameters are correct, do an nslookup on the hostname and check to see how long it takes to return a result. If more than two seconds, either enter the CA hostname into the hosts file or look for a DNS server with a quicker return.

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