What is UI0Detect.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the UI0Detect.exe 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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UI0Detect.exe file information

Windows Task Manager with UI0Detect
UI0Detect.exe process in Windows Task Manager

The process known as Interactive services detection belongs to software Microsoft Windows Operating System by Microsoft (

Description: UI0Detect.exe is an important part of Windows, but often causes problems. UI0Detect.exe is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 35,840 bytes (98% of all occurrences) or 63,488 bytes. 
UI0Detect.exe is a Windows core system file. The UI0Detect.exe file is a Microsoft signed file. The program is not visible. UI0Detect.exe is able to monitor applications. Therefore the technical security rating is 5% dangerous, however you should also read the user reviews.

Recommended: Identify UI0Detect.exe related errors

Important: Some malware disguises itself as UI0Detect.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the UI0Detect.exe 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

ui0detect.exe is a process from Vista Interactive Services Detection Service by Micorsoft and part of Windows Vista
bei mir ist die Dateigröße 40960 Bytes (win7, 64 Bit)
  Andreas Zwölfer  
After multiple W7 installs, it only now appears. THEREFORE, it can't be essential. And if not essential, it's suspicious.
Interactive Services Detection is a mitigation for legacy applications (prior to Vista) that detects if a service is trying to interact with the desktop (not allowed in vista, 7, etc.). This is handled by the Interactive Services Detection (UI0Detect) service. When you choose “View the message”, you are taken to session 0’s desktop (UI in Vista is session 1) and you can only interact with the dialog or message that services have tried to display on the desktop. This indicates a problem that needs to be fixed (infection, legacy service, etc.).
  DDRAMbo   (further information)
For the ignorant who thinks essential programs make themselves visible all the time, please read up on how this works. Entirely harmless. It isn't related to any errors so the "Best Practice" is simply a cookie cutter for something that doesn't need a solution
I keep an avid eye on background running apps, this one just appeared in the past 24hours after uninstalling KB3068708. IMO this is very shady and I do not trust it.
nó cứ hiện lên khi khởi động máy

Rating chart

Summary: Average user rating of UI0Detect.exe: based on 10 votes with 7 user comments. 3 users think UI0Detect.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 4 users think it's neither essential nor dangerous. 2 users suspect danger.

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Best practices for resolving UI0Detect issues

A clean and tidy computer is the key requirement for avoiding problems with UI0Detect. 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 UI0Detect.exe 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

UI0Detect.exe [all]