When I try to update my installation by running Internet Update, I get the error message
Registration required

The reason for this may be several. Common for all scenarios is that you have tried to validate with a syntactically correct key (otherwise you would have got another error message). However that key is not in our key database (yet) - see below.
If you have a previous installation of Norman Virus Control or Norman Internet Control, and then changed to to the other product, you will always get a new key. The old key is then revoked.
Your first attempt in correcting the Registration requred error should be to check if the key in your installation is the same one as the latest one you have got from any Norman representative.
It may take some time from the key is issued to it is updated in Norman's centalized databases. The reason for this is that the replication system may be busy with some time-consuming task.
Please try to wait for one hour or two and try again.
An error may have occurred in our system
You should contact Norman support.
Always include your authentication key in the request.