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