Britec Tech Support Forum - [Solved] UAC in Windows 8.1 not working

Hi All,
Everytime I Run as Administrator an application in a standard or power user account the credential dialog box automatically disappear. Need help how to fix this issue. Thanks.

OS: Windows 8.1 Professional
Architecture: x64
Note: Windows is up to date

I think what you are looking for might be this...
https://www.eightforums.com/tutorials/41136-uac-change-prompt-behavior-administrators-windows.html

"Prompt for credentials on the secure desktop: When an operation requires elevation of privilege, the user is prompted on the secure desktop to enter a privileged (administrator) user name and password. If the user enters valid credentials, the operation continues with the user's highest available privilege."

Admin_UAC_Prompt_for_credentials_on_secure_desktop.reg

(Use at your own risk!)

Hi Gary Welcome to the forum.

Also try Run SFC /Scannow

How-to below:

Use the System File Checker tool to repair missing or corrupted system files

First of all thank you for the warm welcome.
I'll try all your suggestions when I got home. The article is worth reading.

Hi guys,
Just an update, I have tried both suggestions however it didn't solved my issue.
I ran first system file checker (sfc /scannow) and it seems i don't have any missing or corrupted system files.
After that I tried jmitservices suggestion and modify the UAC setting.
And now everytime I run a program as Administrator on the standard account I got an error "File system error -1073741819"

I also checked the Event Viewer and i found out that there are errors.

Quote:Log Name: Application
Source: Application Error
Date: 09/10/2014 9:55:48 PM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: CANON-PC
Description:
Faulting application name: consent.exe, version: 6.3.9600.17198, time stamp: 0x538e8a2c
Faulting module name: DUI70.dll, version: 6.3.9600.17031, time stamp: 0x53086a1c
Exception code: 0xc0000005
Fault offset: 0x000000000000277d
Faulting process id: 0x1084
Faulting application start time: 0x01cfe3c8baa31b9d
Faulting application path: C:\Windows\system32\consent.exe
Faulting module path: C:\Windows\System32\DUI70.dll
Report Id: f8a9f0cd-4fbb-11e4-8269-eca86bdaea7b

Quote:Log Name: Application
Source: Application Error
Date: 09/10/2014 6:51:32 PM
Event ID: 1000
Task Category: (100)
Level: Error
Keywords: Classic
User: N/A
Computer: CANON-PC
Description:
Faulting application name: WpcMon.exe, version: 6.3.9600.17236, time stamp: 0x53c4e2ad
Faulting module name: DUI70.dll, version: 6.3.9600.17031, time stamp: 0x53086a1c
Exception code: 0xc0000005
Fault offset: 0x000000000000277d
Faulting process id: 0x28c
Faulting application start time: 0x01cfe3aec50a2b13
Faulting application path: C:\Windows\system32\WpcMon.exe
Faulting module path: C:\Windows\system32\DUI70.dll
Report Id: 3ac86701-4fa2-11e4-8269-eca86bdaea7b

Diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall and other Windows security options and features.

Try running this: Fix security issues to protect and secure Windows automatically

It may not sound very technical but can't you simply restore back to a time before the problem existed?

I was able to fix my issue, it was actually my fault I mess up the registry last few weeks just to disable the automatic login.
I modify the permission of

Quote:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\UserSwitch

which did the trick on disabling the auto login however I didn't notice that it has a side effect which results to malfunction the UAC. What I did was I restore the permission of the registry and follow other procedure to disable the auto login.
https://linustechtips.com/main/topic/138177-disable-automatic-log-in-to-last-user-on-windows-81/
Now, everything is fine and no more errors in event viewer.

Sorry guys for my stupidity..

Thanks for letting us know garylp. Glad you got it sorted.

I'll mark this thread as solved.