TAP adapter on Windows 7 is erroneous

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postcd
OpenVPN User
Posts: 21
Joined: Sun Jan 24, 2016 9:22 pm

TAP adapter on Windows 7 is erroneous

Post by postcd » Sun Nov 15, 2020 4:45 pm

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I have also seen: "OpenVPNServiceInteractive" is not started.
which may be result of non working TAP. It worked today, but after i used Device manager in Windows, right clicked TAP device tand clicked to update driver, i also updated main network interface driver.
Now it does not work.
Why i messed with the driver update, because i was getting BSODs that appeared to be related to network drivers.

I already tried to reinstall OpenVPN (including TAP and tried to click Uninstall TAP device including drivers and doing restart. That doe snot fix it. Also tried to disable Windows unsigned drivers verification.

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TinCanTech
OpenVPN Protagonist
Posts: 8374
Joined: Fri Jun 03, 2016 1:17 pm

Re: TAP adapter on Windows 7 is erroneous

Post by TinCanTech » Sun Nov 15, 2020 4:54 pm

postcd wrote:
Sun Nov 15, 2020 4:45 pm
but after i used Device manager in Windows, right clicked TAP device tand clicked to update driver, i also updated main network interface driver.
Now it does not work.
Do not use Device manager to update Windows TAP adapter because it will not work.

Uninstall OpenVPN; Remove your network card from device manager and reboot.

If that does not work then re-install Windblows.

postcd
OpenVPN User
Posts: 21
Joined: Sun Jan 24, 2016 9:22 pm

Re: TAP adapter on Windows 7 is erroneous

Post by postcd » Sun Nov 15, 2020 6:09 pm

Thanks for your replies. I tried yours mentioned Network device removal (including drivers), reboot, OpenVPN reinstall. The issue happen even in safe mode. But i think i discovered that it does nto happen when i reboot computer, hitting Shift+F8 key after bios, right before OS boot menu, and it shows extended boot options and i select one named "Disable driver signature enforcement".
But on normal boot it fails again, even i tried to disable driver signatures like this:
clicks start, type cmd, right click and select to run as admin. Paste and execute (Enter) following two commands:
bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
bcdedit -set TESTSIGNING ON

I am wondering how to disable signature enforcement now. I am having old OS (W7) so maybei would need to install older TAP driver? Or find out how to disable that signature checking. Ideas?

btw Event viewer shows:
Kernel PnP
The driver \Driver\tap0901 failed to load for the device Root\NET\0000.

btw2. driver appears not signed:
Image

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TinCanTech
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Posts: 8374
Joined: Fri Jun 03, 2016 1:17 pm

Re: TAP adapter on Windows 7 is erroneous

Post by TinCanTech » Mon Nov 16, 2020 1:55 am

That is an older driver. You must uninstall Openvpn.

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