IIS 7+: HTTP Error 403.13 – Forbidden: Your client certificate was revoked, or the revocation status could not be determined

Issue:

HTTP Error 403.13 – Forbidden

Your client certificate was revoked, or the revocation status could not be determined.

If your webserver cannot contact certificate revocation (CRL) server or your certificate was revoked you will receive an error 403.13.

Cause/Problem:

N/A

Resolution:

Make sure your revocation list is accessible via LDAP or HTTP or disable revocation checks.

Open Registry Editor and navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\HTTP\Parameters\SslBindingInfo\<SSL Binding>

Add DWORD key: DefaultSslCertCheckMode with value 1

Restart your server.

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