How to find out the causes of a memory leak for Windows 2008 R2 and TMG2010?

Question

Forefront Threat Management Gateway

A memory leak has been noticed on Windows Server 2008 R2. All 6 GB disappear in 4-5 days, after which the server disables incoming connections. The situation is saved only by reloading from the console.
The server has TMG2010 installed. I saw a similar question , but Traffic Inspector was installed there, replacing the driver of which solved the problem.
In my case, the main consumer of the non-paged pool is the "Nnnn" tag:

The search showed the netio.sys driver. I tried to change the network card (new drivers), but it did not help.
I checked some updates on the Microsoft website (for example , this ), but at startup (after 3-5 seconds) they write that " this update is not applicable to your system " (errors in choosing a system / architecture are excluded).
There are latest updates of TMG (SP2 Rollup 5) and OS.
What do you suggest?

Answer 1

What preceded the problem?