How to fix “Deserialization Not Allowed For Class” Error during AEM upgrade? A simple fix is to add com.sun.crypto.provider.SealedObjectForKey deserialization in the deserialization firewall configuration
After AEM upgrade in the author instance, the error No 'SupportedCredentials' configured. Using default implementation supporting 'SimpleCredentials' needs to be fixed by applying the LDAP name in the request.