The
installation wizard of TMG 2010 evaluation version does
not inform you about the evaluation period. Will, the answer is easy,
TMG 2010
evaluation version will work for 120 days. So if you
installed TMG 2010 evaluation version, and later on you
decided to upgrade it to the RTM version of TMG,
unfortunately, its not a matter of just typing the
product key and then the evaluation version will become
fully licensed. However, the good news, is that you can
simply perform an in-place upgrade. So lets do it :
- Insert the TMG 2010 RTM
DVD into your server's DVD drive, or if you have already
copied the installation files to your hard disk, then
simply double click on autorun.hta, this will launch the
Microsoft Forefront Threat Management Gateway 2010 installer.

- Click on
Run
Installation Wizard. We don't need to
run the preparation tool as TMG is already installed.

- On the
Welcome
to the Installation Wizard for Microsoft Forefront TMG,
click Next

- If you
are asked to enter the Product Key, type
it and then click on Next
- On the
Ready to
Install the Program page, click Install

Be informed that during
this operation, few services will be stopped and then
restarted.

Eventually, the installation wizard will
be completed, and you once you receive
this page, then you have completed
upgrading your evaluation version of TMG
2010 to a licensed RTM version.

Ok... now comes a common
question, how can I verify that the evaluation version
is now a licensed one ? Well, unfortunately, you can not
see any difference between the evaluation or the
licensed version, and we will not be able to verify,
neither by a version number nor by a product ID number
!!
Summary
The evaluation version
of Forefront Threat Management Gateway works for 120
days. At any time, if you decided to upgrade the
evaluation version to a fully licensed one, this can be
easily done by having an in-place upgrade.