Symptoms

Error Message on the Configuration Analysis tool

Alternative method failed to set permissions for user on the Crypto Key DENALLIXK2Service
Parameter name: sddlForm

Certificates.AddAccessToCertificate: 16:29:49:>> Private key path: C:ProgramDataMicrosoftCryptoRSAMachineKeys8b1a9be90ab6cdb5e8c847bc51e98993_927c6a8e-8c45-4108-8a6c-1b4b3b40cbf8
20:5: Certificates.AddAccessToCertificate: 16:30:51:>> Logged Error: Could not set key access: System.ArgumentException: Value was invalid.
Parameter name: sddlForm
 

Diagnoses

The error happens when the K2 Installer is attempting to set righyts on a K2 Certificate of the specified user, in this case DENALLIXK2Service.
If the K2 Installer cannot resolve the user, then we raise the error
 

Resolution

The issue was resolved internally by opening the necessary ports in the firewall between their two domains.
Read more on K2 and Firewalls here : http://help.k2.com/kb001318_