SSL VPN Problem - Windows 11 Core Protected by Lenovo

Thomas Caimi Lv1Posted May-04-2026 20:52

Hi,
   I've a problem regarding the SSL VPN in Windows 11 25H2; the installation of the client seems to go well, but the connection does not work because the network adapter it's not created.

I've already tried without secure boot, disabling most of the protection features but is seems to not work; on another Win 11 it works.

The only difference that I saw is that this is a "PC with protected core" by Lenovo; even putting the device on test mode (via bcd) does not work.

Do you have any suggestion? I can provide some logs if it can help.

Thanks,
   Thomas

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CLELUQMAN Lv4Posted May-05-2026 00:55
  
can u share some screenshot
Thomas Caimi Lv1Posted May-05-2026 01:13
  
Hi Cleluqman,
   tomorrow i'll try do some screenshot about it; here are some "info" that I've collected so far:

Lenovo PW-0DGLMW

- With secureboot disable, commands I've tried (and reverted it back before leaving work):

  1. bcdedit /set hypervisorlaunchtype off
  2. bcdedit /set vsmlaunchtype off
  3. bcdedit /set testsigning on
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- I've already tried an entire reset of the TCP/IP stack:
  1. netsh int ip reset
  2. netsh winsock reset
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- If I check under devices, the virtual NIC appears as:

\ROOT\NET\0000

- I've tried to point the Sangfor folder for the driver installation without success; the driver it's not listed if I query:

  1. pnputil /enum-drivers
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The thing that seems correlated to the issue its' that if i try to "force" the installation of the driver, I get that the auhor of the Authenticode signing catalog it's not trusted.

Let me know, thanks in advance,
   Thomas
Humayun Ahmed Lv4Posted May-06-2026 20:03
  
Only compatible, signed drivers are allowed

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