Upgrading TMG Evaluation to RTM and receive the Following Error “The Internal Network is missing. Verify that the Internal Network has been defined”

2012-01-16T12:08:52+00:00 January 16th, 2012|Uncategorized|

We had an issue recently when upgrading TMG 2010 Eval to full blown licensed TMG. To upgrade to TMG Full version we inserted a TMG disk and ran the installation wizard which came back with the following error “The Internal Network is missing. Verify that the Internal Network has been defined”

What the issue turned out to be is that we had installed TMG Sp2 onto the TMG Evaluation which was causing the issues, so what we had to do was Slipstream TMG Sp2 into TMG install files and setup ran fine Smile (I’ll be blogging how to Slipstream TMG SP2 soon)