Cannot detect network Printer

Show you the steps? I am not sure he could have been more clear.

The default configuration for ColdFusion on a Windows server is to run
as a service under the 'localsystem' account. This account, by default,
has *NO* permissions to any network resources.

Your choices are:

To modify the permissions of the localsystem account, but this is not a
good idea.

OR

You could run the ColdFusion service under an existing account that has
the required permission, still not a great idea, but ok for testing
purposes.

OR

The best practice is to create a domain account specifically for the
ColdFusion service and give it exactly what permissions your ColdFusion
applications need and then set the ColdFusion service to run under this
account in the Windows Services Panel.

This is done by accessing the properties of the ColdFusion service(s) in
the Windows Services panel and chaning the 'Log On' tab to run a
specific account instead of the default 'Local System account'.