What is tweakui.cpl?

Please read below to decide for yourself whether the tweakui.cpl on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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Tweakui.cpl file information

The process known as User interface customization toy or User interface customization toy (prerelease) belongs to software Microsoft Windows (version 95 PowerToys) by Microsoft ( or

Description: Tweakui.cpl is not essential for the Windows OS and causes relatively few problems. Tweakui.cpl is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 106,544 bytes (80% of all occurrences), 102,256 bytes, 108,592 bytes, 110,640 bytes or 130,608 bytes. 
The program has a visible window. The program starts when Windows starts (see Registry key: MACHINE\Run). Tweakui.cpl is not a Windows system file. Tweakui.cpl is able to record keyboard and mouse inputs. Therefore the technical security rating is 20% dangerous, however you should also read the user reviews.

Recommended: Identify tweakui.cpl related errors

Important: Some malware disguises itself as tweakui.cpl, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the tweakui.cpl process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

'tweak user interface' control panel from microsoft
Edits registry

Rating chart

Summary: Average user rating of tweakui.cpl: based on 16 votes with 2 user comments. 10 users think tweakui.cpl is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger. 3 users think tweakui.cpl is dangerous and recommend removing it. 2 users don't grade tweakui.cpl ("not sure about it").

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Best practices for resolving tweakui issues

A clean and tidy computer is the key requirement for avoiding problems with tweakui. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the tweakui.cpl process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

tweakui.cpl [all]