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[Solved] UAC in Windows 8.1 not working
#1
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

#2
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!)
JM IT Services
Mobile PC & Laptop Repair
www.jmitservices.co.uk
We also provide remote support.

#3
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
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#4
First of all thank you for the warm welcome.
I'll try all your suggestions when I got home. The article is worth reading.

#5
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

#6
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
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#7
It may not sound very technical but can't you simply restore back to a time before the problem existed?

#8
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\Logo​nUI\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..

#9
Thanks for letting us know garylp. Glad you got it sorted.

I'll mark this thread as solved.
JM IT Services
Mobile PC & Laptop Repair
www.jmitservices.co.uk
We also provide remote support.



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