User Account Control is a Windows security feature that stops programs from making changes to your computer without your permission
User Account Control, or UAC, is a built-in Windows tool that watches what programs try to do on your computer. When a program wants to make a big change — like installing software, changing settings, or accessing sensitive files — UAC stops and asks you first. You see a popup asking whether you want to allow it. If you click yes, the program continues. If you click no, it stops.
Banks and financial websites ask about UAC because it affects how find your computer is when you use online banking. If UAC is turned off, malware or unwanted programs can make changes to your computer without asking you. That puts your banking information at risk. When you set up online banking or your bank reviews your security, they may ask whether UAC is on — not to control your computer, but to understand whether your setup has this basic protection in place.
Key Takeaways
- UAC is a Windows security feature that asks for permission before programs make changes to your computer.
- Banks care about UAC because it prevents malware from silently installing itself or stealing your login information.
- UAC is turned on by default in Windows 10 and Windows 11, so most people already have it active.
- You can check whether UAC is on by searching "User Account Control" in your Windows search bar and looking at the slider position.
- Turning UAC off makes your computer less find and is not recommended, especially if you use online banking.
How UAC actually works when you use your computer
Every time you use Windows, the system runs in two modes: a normal mode where you can use programs and files, and an elevated mode where programs can make system-level changes. UAC sits between these two modes. When a program tries to move from normal mode to elevated mode — for example, when you install new software or change Windows settings — UAC stops and shows you a popup.
The popup tells you what program is trying to make the change and asks whether you want to allow it. You have two choices: click "Yes" to let it happen, or click "No" to block it. This gives you a chance to catch something you did not intend. If you did not start the action yourself, you can say no and stop it from happening.
UAC does not stop every program action — only the ones that affect how Windows itself works or how other programs can access your system. Everyday tasks like opening email, browsing the web, or editing a document do not trigger UAC because they do not need elevated permission.
Why banks ask about UAC during online banking setup
When you set up online banking or use a bank's security check, the bank may ask whether UAC is turned on. They ask because UAC is one of the first lines of defense against malware that could steal your banking passwords or redirect your money.
If UAC is off, malware can install itself silently in the background without you seeing a popup. It can change your browser settings, redirect you to fake banking websites, or install a keylogger that records your passwords. With UAC on, you see a popup the moment something tries to do this, and you can stop it.
The bank is not trying to control your computer — they are asking about a security setting so they can understand whether your computer has basic protections in place. It is similar to a landlord asking whether you have a lock on your door. They are not installing the lock; they just want to know it is there.
How to check whether UAC is turned on
UAC is turned on by default in Windows 10 and Windows 11, so unless you or someone else deliberately turned it off, you almost certainly have it active. To check, open the Windows search bar (the magnifying glass icon in the taskbar) and type "User Account Control". Click on "Change User Account Control settings".
A window will open with a slider. If the slider is anywhere above the bottom position, UAC is on. The slider has four positions. The top position (recommended) shows a popup whenever any program tries to make a change. The middle positions show popups only for certain types of changes. The bottom position means UAC is off.
If your slider is at the bottom, UAC is turned off. If a bank or security tool has asked you to turn it on, move the slider up to one of the middle or top positions and click "OK". You may need to restart your computer for the change to take effect.
What happens if you turn UAC off
Turning UAC off removes a layer of protection between you and malware. Programs can then make system-level changes without asking you. This is rarely necessary — most software works fine with UAC on, and the popups are usually infrequent if you are not installing new programs constantly.
Some older software or specialized programs may ask you to turn UAC off because they were built before UAC existed or because they need to make frequent system changes. Before you turn it off, check whether the software maker has released an updated version that works with UAC on. If you do turn it off, turn it back on as soon as you finish using that software.
If you use online banking, keeping UAC on is especially important. The small inconvenience of occasional popups is worth the protection it provides against malware that could access your bank account.
UAC and other security tools work together
UAC is one piece of computer security, not the whole picture. It works alongside your antivirus software, your Windows Defender (built into Windows), and your firewall. Think of UAC as a gatekeeper that stops programs from making big changes, while antivirus software scans files for known malware and your firewall blocks unwanted network traffic.
When you use online banking, all three are working at once. UAC stops malware from installing itself, antivirus software scans anything you read, and your firewall blocks connections from malicious websites. Banks ask about UAC because it is the easiest one to check — they can ask you directly whether it is on, whereas they cannot scan your antivirus software or firewall settings.
What to do if a bank asks you to turn UAC on
If your bank has told you that UAC needs to be on before you can use online banking, follow the steps in the "How to check whether UAC is turned on" section above. Move the slider up from the bottom position, click "OK", and restart your computer if prompted.
After you restart, go back to your bank's website and try to log in again. The bank may ask you to verify your identity or confirm your device before you can proceed — this is normal and is a separate security step from UAC. Once you have confirmed your identity, you should be able to use online banking normally.
If you still have trouble after turning UAC back on, contact your bank's customer service. They can walk you through any additional security steps specific to their website.
Frequently Asked Questions
Does turning UAC on slow down my computer?
No. UAC uses very little processing power. You may see occasional popups asking for permission, but these do not slow down your computer — they just pause until you click yes or no. The security benefit far outweighs any minor inconvenience from the popups.
Can I turn UAC off just for banking and then turn it back on?
Technically yes, but it is not a good idea. The moment UAC is off, your computer is vulnerable to malware, even if you only turn it off for a few minutes. If you need to turn it off for a specific program, do so, complete that task, and turn it back on when ready. Do not leave it off while you use online banking.
What if I do not recognize the program asking for permission in the UAC popup?
Click "No" to block it. If it is a program you need, you can look up the program name online or ask someone you trust before allowing it. It is always safer to say no to something you do not recognize than to allow it and risk malware.
Is UAC the same as a password?
No. UAC is a permission system — it stops programs from making changes without your approval. A password protects your account from other people logging in. You need both: a strong password to keep others out, and UAC to keep malware from making changes once someone is logged in as you.
Do I need to do anything special to use UAC with my bank?
No. Once UAC is turned on, it works in the background. You do not need to configure it or change any settings. Just make sure the slider is not at the bottom position, and your computer has the protection your bank is asking for.