To upgrade to the Forefront TMG Enterprise Edition, purchase a license for your server and get a new product key.
To upgrade to Enterprise Edition
In the Forefront TMG Management console, in the tree, click the System node.
On the System tab, right-click the server, and then click Properties.
Click the Product ID tab and then click Upgrade to Enterprise Edition.
Enter the Forefront TMG Enterprise Edition product key.
Click OK to close the Product Key Entry dialog box, and then click OK to close the Server Properties dialog box.
Note: After upgrade, the Product ID shown on the About Forefront Threat Management Gateway page under Help is the old product ID. This does not affect the behavior of the enterprise.
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