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Is LogonUI.exe safe?

LogonUI.exe is a executable file (a program) within Windows. The filename extension .exe denotes an executable file. You should only run executable files from publishers you trust, because executable files can potentially change your computer settings or harm your computer. The free file information forum can help you determine if LogonUI.exe is a virus, trojan, spyware, or adware that you can remove, or a file belonging to a Windows system or to an application you can trust.

LogonUI.exe file information

The process known as Windows Logon UI or Windows Logon User Interface Host belongs to software Microsoft Windows Operating System by Microsoft (www.microsoft.com).

Description: LogonUI.exe is an important part of Windows, but often causes problems. LogonUI.exe is located in the folder C:\Windows\System32. Known file sizes on Windows 7/XP are 514,560 bytes (16% of all occurrences), 504,832 bytes and 14 more variants. http://www.file.net/process/logonui.exe.html 
The program is not visible. It is a Microsoft signed file. LogonUI.exe is able to monitor applications and manipulate other programs. Therefore the technical security rating is 36% dangerous, however also read the users reviews.

Recommended: Identify LogonUI.exe related errors

If LogonUI.exe is located in a subfolder of "C:\Program Files", the security rating is 65% dangerous. The file size is 45,056 bytes (75% of all occurrences) or 71,168 bytes. The program is not visible. The process starts upon Windows startup (see Registry key: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run, HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Run). The file is not a Windows system file. The application uses ports to connect to a LAN or the Internet. LogonUI.exe is able to monitor applications.

If LogonUI.exe is located in the folder C:\Windows, the security rating is 72% dangerous. The file size is 59,904 bytes. There is no file information. The program has no visible window. The LogonUI.exe file is an unknown file in the Windows folder. It is not a Windows system file.

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

this file is not dangerous at all it is related with the logon it's just nothing to worry at all
LogonUI.exe iihad 2 of them 1 C: after using hiremsboot cd program
LOGONUI is a program to open up your user interface. As well there is a loggoffui as well just to determine that you log on or log out. as well as a shutdownui i perhaps to think. If the file description is microsoft etc. in your System32 it's safe. If its on anywere else. Your kid of screwed!
LogonUI.exe is safe as long as it's in the system32 dir.
  Matt_Coastland   (further information)
It is a system file
This Is Windows Graphical Interface When A User Logs off, shuts down or switches user. If Not In The System32 Directory (the Place Its In) It May Be A Virus, If So Run Startup Repair And It Should Fix It On Windows 7 And Vista.
  Tom Zsinko , At TwoDudesOneMine  
it is a logo for screen or you can say a welcome screen
its safe as long as its in the system32 dir
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of LogonUI.exe: based on 77 votes with 9 reviews.
39 users think LogonUI.exe is essential for Windows or an installed application. 3 users think it's probably harmless. 18 users think it's neither essential nor dangerous. 9 users suspect danger. 8 users think LogonUI.exe is dangerous and recommend removing it. 11 users don't grade LogonUI.exe ("not sure about it").

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LogonUI scanner

Security Task Manager shows all running Windows tasks including embedded hidden functions (e.g. keyboard or browser monitoring, autostart entry). A unique security risk rating indicates the likelihood of the process being potential spyware, malware, keylogger or a Trojan.

Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, trojans, keyloggers, malware and tracking threats from your hard disk. Ideal supplement to Security Task Manager.

SpeedUpMyPC scans, cleans, repairs and optimizes your computer.

Other processes

LogonUI.exe [all]