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Use an offline workstation which is connected to the internet to authenticate licenses for the site with the GE Cloud. Manually transfer this authentication text file to the Central License Server on the site and manually upload it. This server will have an intranet connection to the various License Clients. Look up the licenses from the License Clients to the License Server and activate them.
3. GE Cloud -> Work Station ->manually transferred -> Application (License Server/ License Client)
->manually transferred -> Historian (License Server/ License Client)
->manually transferred -> IGS OPC (License Server/ License Client) 
No site "Central" License Server. Each client has its own License Server installed with it. They connect to the License Server installed on the same server as them.
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