Hello once more Loxch,
I’d like to ask if there’s a problem with the latest version of Mudfish, particularly 4.5.3
You see, I tried to install this on another computer running Windows 7 x64 and I got a notification saying Windows requires a digitally signed driver as shown on the screenshot:
https://image.mudfish.net/i/yvBRzb
I have the logs screenshoted as well:
https://image.mudfish.net/i/wM9MLf
It’s quite weird, could you please check up on it?
I’d also like to add
For further investigation of a possibility of infiltrated Mudfish installer binaries
Also, does Full VPN Mode make use of this windows service?
IKEEXT - IKE and AuthIP IPsec Keying Modules
We think that Unsigned Driver issue is caused to a new feature included in Mudfish 4.5.1+.
That feature requires Microsoft Windows 8+.
So that caused showing Unsigned Driver Issue in Windows 7-.
Thank you very much for the awesome response! Though I’d seriously like to know if mudfish is dependent on the IKEEXT service of Windows, or is it not?
At least if you’re talking about IKE and AuthIP IPsec, I can say that Mudfish doesn’t use it because in my coding ability isn’t higher what most of users are expecting. 
ooo I see, thank you for your very modest response 
Please let us know if you couldn’t solve the problem with bcdedit.exe /set nointegritychecks on at cmd or curious about a solution for Windows 10.
Thank you for this plausible fix and thankfully it apparently worked just fine as it is even without me doing any fixes or disabling driver signature enforcement