VPN issues after migrating from ISA 2006 to Forefront TMG 2010

By |2017-12-11T14:16:00+00:00January 24th, 2011|Cloud, Windows|0 Comments

We ran into this issue a while back after performing the migration to TMG 2010, the PPTP VPN stopped working and Event ID 4402 was recorded in the logs:

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Also Event ID 20255:

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Solution:

Open the Network Policy Server console (Start > Administrative Tools > Network Policy Server).

Right-Click servername and select “Register server in Active Directory”

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