rundll32.exe "Windows cannot access the specified device..." Error message when trying to open settings

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rundll32.exe “Windows cannot access the specified device…” Error message when trying to open settings

Paolo Caparrelli Windows 22 June 2022

Method 1:
Solution through Group Policy:
Open gpedit.msc (Group Policy Editor)
Browse to Computer Configuration->Windows Settings->Security Settings->Local Policies->Security Options
Enable “User Account Control: Admin Approval Mode for the Built-in Administrator account”,
Restart workstation (Restart the computer)

Method 2:
Solution through registry:
Open regedit (Search from start menu)
Navigate to: HKEY_LOCAL_MACHINE-SOFTWARE-Microsoft-Windows-CurrentVersion-Policies-System
Make sure the value "EnableLUA" is set to 1
Restart workstation (Restart the computer)

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