Exchange 2013 OWA/ECP Error 500

After I installed Exchange 2013 and tried to access either OWA or ECP on it, I kept getting Error 500.  Looking at the httpproxy logs, I saw this: The unhandled exception was: System.Security.Cryptography.CryptographicException: Invalid provider type specified.

Turns out Exchange doesn’t like the key provider, Microsoft Software Key Storage Provider, so you have to reissue a cert using Microsoft RSA SChannel Cryptographic Provider as the provider.

I did this by going through the web cert enrollment and using the Web Server template.  Then I assigned the new certificate to the SSL sites in IIS.

The solution is over here.

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3 responses to “Exchange 2013 OWA/ECP Error 500”

  1. I have same problem. But when I checked the certificates, I have two. One of them has no provider and the second one is Microsoft RSA SChannel Cryptographic Provider.

    Do you have any solution for that?

    • Which certificate is SSL in IIS using? It has to be the Microsoft RSA SChannel Cryptographic Provider one.

    • How can I find it? I’m new in IIS and certificates. I issued cryptutil -setup my and if print out two certificates as mentioned.

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