In Windows Exchange systems you may receive the following error message after the installation of a digital certificate.

“The certificate is invalid for exchange server usage”


The certificate is invalid for exchange server usage
This warning message occurs due to the following:
  • The SSL certificate cannot be verified to a trusted certificate authority.
  • The SSL certificate that was installed is missing its intermediate CA certificate that helps chain the trust to the root certificate on that system.


You will have to manually install the correct intermediate CA certificate that goes with your SSL certificate product. Contact your Certificate Authority (CA) for this supplementary certificate.
Note: If you purchased your Standard SSL Certificate product from the following CA’s Symantec, GeoTrust, Thawte or RapidSSL you can find the links directly to your SSL certificate product HERE

Once you have retrieved your intermediate CA certificate file perform the following:

Windows IIS/Exchange – Intermediate Installation

If you are unable to use these instructions for your server, Acmetek recommends that you contact either the vendor of your software or the organization that supports it.

Windows Support:
For more information, please refer to Windows Support

 About SSLSupportDesk:

SSLSupportDesk is part of Acmetek who is a Symantec Website Security Solutions Authorized Distributor and a Platinum Partner. Acmetek offers all 4 Brands of SSL Certificates, Symantec, Thawte, GeoTrust and RapidSSL.Offering Norton Shopping Guarantee that inspires trust and increases online sales with a 20x ROI Guarantee.

Contact an SSL Specialist to buy your SSL Certificates from Acmetek, a Symantec Strategic/Platinum Distributor.

Become a Partner and create additional revenue stream while the heavy lifting for you.

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