Disable UAC

Set-ItemProperty -Path "HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System" -Name "EnableLUA" -Value "0"

What is User Account Control (UAC) in Windows?

User Account Control or UAC for short is a security feature of Windows which helps prevent unauthorized changes to the operating system.
These changes can be initiated by applications, users, viruses or other forms of malware.
User Account Control makes sure certain changes are made only with approval from the administrator.
If the changes are not approved by the administrator, they are not executed, and Windows remains unchanged.
It is as if nothing happened. UAC was first made available for Windows Vista, and since then it was improved with each new version of Windows.
How does a User Account Control (UAC) prompt look and what does it share and request?
When you double-click on a file, a setting or an app that is about to make important changes to Windows, you are shown a User Account Control (UAC) prompt.
If your user account is an administrator, the prompt looks like in the screenshot below.
There you can see the UAC prompt in Windows 10 (top), in Windows 7 (middle) and Windows 8.1 (bottom).

The UAC prompt displays the name of the program that is about to make a system change that requires the approval of an administrator, the publisher of that program and the file origin (if you are trying to run a file).
All it needs from the administrator is a click or tap on Yes, to let the program or the file do the changes that it wants.
If your user account is NOT an administrator, the prompt looks different.
For example, in Windows 10, the UAC prompt requests for the administrator’s PIN (if it has set one) or password.