This indicates we are not able to access the registry key. You can work around this by excluding this registry key so it will not be processed during ReACL. This can be done from Device ReACL Profile.
Go to the Product Active Directory dashboard
Setup | Profiles | ReACL Profiles
Select the Profile and click Edit
Click through wizard to second screen.
Add the following keys to the 'Exclude these registry keys from processing' field, multiple entries must be separated by a new line:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Classes
Computer\HKEY_LOCAL_MACHINE\SECURITY
Here is a screenshot example: