Change UAC Settings in Windows 10: A How-To Guide

User Account Control (UAC) in Windows 10 is a security feature that prevents unauthorized changes to your operating system. You can adjust its notification level by going to Start, typing “UAC,” and opening “Change User Account Control settings.” The slider offers four positions, from “Always notify” to “Never notify,” and we’ll explain what each does and how to pick the right one for your needs.

What Is User Account Control?

UAC is a security boundary introduced in Windows Vista and refined in Windows 10. When a program tries to make a system-wide change—like installing software, changing system settings, or modifying the registry—UAC triggers a prompt asking for administrator permission. This prompt appears as a dimmed screen with a yes/no dialog. If the user is an administrator, they click “Yes” to approve; if they’re a standard user, they must enter an administrator password.

The core idea is to prevent malware or accidental clicks from silently altering critical system files. Even if you run as an administrator, your programs run with standard user rights unless they explicitly request elevation. UAC is the gatekeeper for that elevation request.

How to Open UAC Settings

There are several ways to get to the UAC settings window. The most straightforward:

1. Click the Start button and type UAC.
2. In the search results, click “Change User Account Control settings” (it appears under “Control Panel”).
3. Alternatively, press Windows + R, type UserAccountControlSettings, and press Enter.

You’ll see a vertical slider with four positions. The current setting is marked by a small indicator. Drag the slider to your desired level and click OK. If UAC is currently active, you’ll get a prompt to confirm the change.

The Four UAC Notification Levels Explained

Each slider position changes how often Windows prompts you and what it does with your desktop:

• Always notify (top): You’re prompted before any app makes a change that requires administrator rights, including changes to Windows settings. The screen dims (secure desktop) to prevent other programs from simulating clicks. This is the most secure but also the most intrusive.
• Notify me only when apps try to make changes to my computer (default): Windows prompts when a program tries to install or change system settings, but not when you manually change Windows settings (like changing the desktop background). The desktop dims for app-initiated changes. This is the recommended default for most users.
• Notify me only when apps try to make changes to my computer (do not dim my desktop): Same as above, but the screen doesn’t dim. The prompt appears as a normal window, which is slightly less secure because other programs could potentially interact with it, but it’s less jarring.
• Never notify (bottom): UAC is effectively disabled. You won’t get any prompts, and if you’re an administrator, all apps run with full admin rights. This is not recommended for most users because it removes a key security barrier.

The default (second from top) is the best balance for everyday use. The “Always notify” setting is for high-security environments or when you’re troubleshooting a suspicious issue. The “Never notify” setting is only useful for specialized kiosk or testing scenarios, and even then, it’s safer to use a standard user account instead.

How to Choose the Right Setting

Your choice depends on your risk tolerance and how often you install software. Here are some guidelines:

• If you install software frequently and trust the sources, the default setting is fine. You’ll see prompts for each installer, which is a good chance to verify what you’re running.
• If you’re a power user who dislikes prompts, consider the “do not dim” option. It still protects you from silent app changes but is less annoying.
• If you’re setting up a computer for a less technical user, keep the default or even “Always notify” to add friction against accidental system changes.
• Avoid “Never notify” unless you fully understand the risks. Malware that runs under your account will have the same admin rights as you, so it can disable antivirus, install rootkits, and access everything.

Remember that UAC is not a firewall or antivirus. It’s a consent prompt. Even with UAC on, you should run a reputable antivirus and keep Windows updated.

Common Problems and Misconceptions

Many users think UAC is just an annoyance and turn it off permanently. That’s a mistake. Here’s why:

• UAC helps protect against “fileless” malware that tries to modify system settings without dropping a file. Without UAC, such malware can run with full privileges.
• UAC doesn’t break software. If a program fails to run with UAC on, it’s usually because the program is outdated or needs to be run as an administrator manually (right-click > Run as administrator).
• Turning off UAC can break Windows apps. Some built-in apps (like Settings) may behave unpredictably if UAC is disabled. You might see errors or missing features.

Another common issue: you change UAC settings but the slider doesn’t stick. This can happen if you don’t have administrator rights. You must be logged in as an administrator to change UAC. If you’re a standard user, you can’t change it, and the slider will be grayed out.

If you’re trying to change UAC because a specific program keeps prompting, there’s a better solution: create a shortcut with “Run as administrator” checked in its properties. That way, the program runs elevated without prompting, but UAC stays on for everything else. To do this:

1. Right-click the program’s shortcut and select Properties.
2. Go to the Compatibility tab.
3. Check “Run this program as an administrator”.
4. Click OK.

This is a safer, targeted approach than disabling UAC globally.

UAC and the Secure Desktop

When UAC prompts appear on the “secure desktop,” the entire screen dims and the prompt is shown in a special isolated mode. This prevents other programs from displaying fake dialogs or simulating clicks. The “do not dim” option disables this protection, so a malicious program could potentially overlay a fake prompt asking for credentials. That’s why the default is to dim.

If you’re using the “do not dim” setting, be extra cautious about what you click. Always check the dialog’s title bar and the program name before clicking “Yes.”

Frequently Asked Questions

Will changing UAC settings affect my installed programs?

No. Changing the UAC slider doesn’t uninstall or modify programs. It only changes how often Windows asks for permission. Some legacy programs might behave differently if they were designed to run with admin rights, but that’s rare. If a program fails after lowering UAC, re-enable UAC and run that program as administrator manually.

Why is my UAC slider grayed out?

You need administrator rights to change UAC settings. If you’re logged in as a standard user, you can’t modify UAC. Log in with an administrator account, or ask an admin to make the change. Also, if your organization manages the PC via Group Policy, the slider may be disabled by policy.

What’s the difference between UAC and running as administrator?

Running as administrator gives a specific program full access to the system. UAC is the mechanism that controls when that elevation happens. When you right-click a program and choose “Run as administrator,” you’re bypassing the automatic UAC prompt for that one launch. UAC still governs other programs.

Is it safe to set UAC to “Never notify”?

It’s not recommended for most users. It removes a critical security layer, making it easier for malware to take over your system. If you’re an administrator, all programs run with full rights, so a malicious script can do anything you can. Only use this setting in controlled, offline environments or when you’re absolutely sure of what you’re doing.

How do I reset UAC to the default?

Open the UAC settings window and drag the slider to the second position from the top (“Notify me only when apps try to make changes to my computer”). Click OK and restart if prompted. That’s the default and recommended setting.

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