System.Security.Cryptography.CryptographicException: keyset does not exist

Question

When I make x509 certificate to encypt and decypt message, I got some error information and could not fix this problem. Could someone ever happend to solve this bug? thanks.

Answer 1

I did run into the same problem. The message is not ideal and in my case my user did not have permission to access the private key. You can fix this using these steps:

1. Open mmc
2. Add certificate snap-in
3. select the certificate you want to use
4. right click on it and select 'All Tasks' / 'Manage Private Keys...'
5. Add your user to the list of authorized users and allow 'Full Control'