What is ctu33.dll?

Ctu33.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if ctu33.dll is a Windows system file or if it belongs to an application that you can trust.

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Ctu33.dll file information

The process known as Ctu33 belongs to software Ctu33Nt or Euroglot Professional by Linguistic Systems B.V ( or Crunch Technologies BV.

Description: Ctu33.dll is not essential for the Windows OS and causes relatively few problems. The file ctu33.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 94,208 bytes (90% of all occurrences) or 131,072 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. The program has no visible window. There is no detailed description of this service. The application is loaded during the Windows boot process (see Registry key: AppInit_DLLs). It can change the behavior of other programs or manipulate other programs. The file is not a Windows system file. There is no file information. Therefore the technical security rating is 91% dangerous, however you should also read the user reviews.

Uninstalling this variant: If you encounter difficulties with ctu33.dll, you may also uninstall Euroglot Professional software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify ctu33.dll related errors

Important: Some malware camouflages itself as ctu33.dll. Therefore, you should check the ctu33.dll 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

belongs to euroglot 4 (translation program)
I've installed Euroglot 4 too and have the same file
  Peter Cremers  
Euroglot 4 (translation program) related
  Peter Cremers  
is translation program euroglot
  louis borgs  
belongs to Euroglot; slove problem with patch from Euroglot
  HJ Verhagen   (further information)
prevent application to startup
  Philippe L  

Rating chart

Summary: Average user rating of ctu33.dll: based on 9 votes with 6 user comments. 7 users think ctu33.dll is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks ctu33.dll is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving ctu33 issues

A clean and tidy computer is the key requirement for avoiding problems with ctu33. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ctu33.dll process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ctu33.dll [all]