Windows 10 text-based logonUI

Discuss Windows Vista, 7, 8.x, 10 and Windows Server 2008, 2008R2, 2012, 2016, 2019, Home Server, SBS 2008, SBS 2011.
Post Reply
razvangabriel82
FTP Access
Posts: 12
Joined: Sun Oct 04, 2015 8:22 pm
Contact:

Windows 10 text-based logonUI

Post by razvangabriel82 »

Hey guys, I did an experiment where I successfully disabled DWM on Windows 10 20H1.
If anyone wants to see it, it is right here: :)
However, what I want to show is a glimpse of what I found during this test, which is a CMD-based logonUI, which I think is very interesting...
Image
This is the "login screen"
Image
The security options
Image
Image

So, what gives? Is this actually a feature (like an emergency logon system) or just a bug?

Meow
Posts: 147
Joined: Mon Feb 03, 2020 5:28 am

Re: Windows 10 text-based logonUI

Post by Meow »

It’s neither of those. It’s a feature that Windows server core uses and that can be enabled via registry
Try switching the windows 3.0 ega driver with windows 1.01’s. it will be fun.

VictorMX2307
User avatar
Posts: 5
Joined: Thu May 21, 2020 12:17 am

Re: Windows 10 text-based logonUI

Post by VictorMX2307 »

I think its a bug because, if really Windows 10 would had the 'emergency logon system' i think should be more simple or something like that.
shhh...:beta:

AlphaBeta
User avatar
Donator
Posts: 2126
Joined: Sun Aug 12, 2012 4:33 pm
Location: Czechia

Re: Windows 10 text-based logonUI

Post by AlphaBeta »

This is implemented in consolelogon.dll. Aside from being used in Server Core it's also used on other editions as a fallback when the regular logon screen can't be used.
AlphaBeta, stop brainwashing me immediately!

Image

razvangabriel82
FTP Access
Posts: 12
Joined: Sun Oct 04, 2015 8:22 pm
Contact:

Re: Windows 10 text-based logonUI

Post by razvangabriel82 »

AlphaBeta wrote:
Sat Jun 27, 2020 10:59 pm
This is implemented in consolelogon.dll. Aside from being used in Server Core it's also used on other editions as a fallback when the regular logon screen can't be used.
This makes sense, as I haven't touched the registry...

Meow
Posts: 147
Joined: Mon Feb 03, 2020 5:28 am

Re: Windows 10 text-based logonUI

Post by Meow »

razvangabriel82 wrote:
Sat Jun 27, 2020 11:03 pm
AlphaBeta wrote:
Sat Jun 27, 2020 10:59 pm
This is implemented in consolelogon.dll. Aside from being used in Server Core it's also used on other editions as a fallback when the regular logon screen can't be used.
This makes sense, as I haven't touched the registry...
Check if Windows.UI.Logon.dll exists. If not, then that’s what caused the console screen. As AlphaBeta said, it’s a fallback when the regular logon screen can’t be used.
Oh and it doesn’t use dwm for anything so that’s why it’s used there.
Try switching the windows 3.0 ega driver with windows 1.01’s. it will be fun.

razvangabriel82
FTP Access
Posts: 12
Joined: Sun Oct 04, 2015 8:22 pm
Contact:

Re: Windows 10 text-based logonUI

Post by razvangabriel82 »

Meow wrote:
Sat Jun 27, 2020 11:07 pm
razvangabriel82 wrote:
Sat Jun 27, 2020 11:03 pm
AlphaBeta wrote:
Sat Jun 27, 2020 10:59 pm
This is implemented in consolelogon.dll. Aside from being used in Server Core it's also used on other editions as a fallback when the regular logon screen can't be used.
This makes sense, as I haven't touched the registry...
Check if Windows.UI.Logon.dll exists. If not, then that’s what caused the console screen. As AlphaBeta said, it’s a fallback when the regular logon screen can’t be used.
Oh and it doesn’t use dwm for anything so that’s why it’s used there.
This might be it, because I deleted this dll, otherwise Windows would get stuck on a boot loop... But nonetheless, interesting feature!

Courage
User avatar
FTP Access
Posts: 1014
Joined: Thu Oct 18, 2012 1:59 pm

Re: Windows 10 text-based logonUI

Post by Courage »

9903 is the first build to introduce ConsoleLogon.dll, and therefore the first build to have this feature.

Image

In order to enable this feature in 9903, the following two DWORD values must exist and have their values set to 1:

Image

LeonardoIannelliRETRIEVES
FTP Access
Posts: 23
Joined: Sun Nov 06, 2016 2:12 am

Re: Windows 10 text-based logonUI

Post by LeonardoIannelliRETRIEVES »

razvangabriel82 wrote:
Sat Jun 27, 2020 10:42 pm
Hey guys, I did an experiment where I successfully disabled DWM on Windows 10 20H1.
[snip]
So, what gives? Is this actually a feature (like an emergency logon system) or just a bug?
How did you get DWM disabled? I wanna try it out in a VM.
Last edited by x010 on Fri Jul 03, 2020 8:58 am, edited 1 time in total.
Reason: snip long quotes in the future - otherwise your post becomes too long
~Leonardo I.

                                                                                                          Windows 8 Beta
For testing purposes only. Build 8176.fbl_core2_sid_dev120104-2026.6d8ec67b25e74be5

razvangabriel82
FTP Access
Posts: 12
Joined: Sun Oct 04, 2015 8:22 pm
Contact:

Re: Windows 10 text-based logonUI

Post by razvangabriel82 »

First of all, I replaced DWM.exe with rundll32.exe (but it still was named DWM.exe, otherwise it would bsod), then I deleted sihost.exe and Windows.UI.Logon.dll (which apparently also causes the CMD-based logonUI). And that's pretty much it (as far as I can remember)...

EFI Shell
FTP Access
Posts: 12
Joined: Wed Jun 24, 2020 3:24 pm

Re: Windows 10 text-based logonUI

Post by EFI Shell »

Can LogonUI.EXE be set as GUI in Windows Server Core versions?

Post Reply