Using MFC ccryptprov to encrypt/decrypt and IIS

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IIS

PHP

encryption

I have written a WIN32 App that Encrypts and Decrypts a string that is stored in the registry by my server program. Once the server program creates the encrypted string, it then uses that string to determine when the license has ended. The WIN32 app runs at the command line and gives the correct decrypted value. However, when PHP calls this same command (KeyCheck.exe) I get 0x80070002 file not found on the Initialization of the CCryptProv.

code:

CCryptProv provider;
hr = provider.Initialize(PROV_RSA_FULL, NULL, MS_ENHANCED_PROV);

hr always returns 0x80070002.

What I have tried:

Looked the running DLLs, and I see the advapi32.dll is available (registered) - tried three different encrypt/decrypt but it all comes back to the file not found error.