Most antivirus programs identify ctfmon.dll as malware—such as Microsoft identifies it as PWS:Win32/OnLineGames.GL or TrojanSpy:Win32/GhostKeylogger.C, and Symantec identifies it as Trojan.Gen or Adware.Rugo.
The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.
Description: Ctfmon.dll is not essential for Windows and will often cause problems. The file ctfmon.dll is located in a subfolder of C:\Windows.
The file size on Windows 10/8/7/XP is 184,320 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. There is no description of the program. The program has no visible window. The service has no detailed description. The application starts when Windows starts (see Registry key: MACHINE\Run). The file is able to record keyboard inputs. It is not a Windows core file. ctfmon.dll appears to be a compressed file. Therefore the technical security rating is 100% dangerous.
Recommended: Identify ctfmon.dll related errors
If ctfmon.dll is located in the C:\Windows folder, the security rating is 100% dangerous. The file size is 258,048 bytes. There is no information about the author of the file. The program has no visible window. There is no detailed description of this service. It is able to record keyboard inputs. Ctfmon.dll is not a Windows system file. Ctfmon.dll is able to record keyboard and mouse inputs and manipulate other programs.
If ctfmon.dll is located in the C:\Windows\System32 folder, the security rating is 80% dangerous. The file size is 873,472 bytes. There is no information about the author of the file. The ctfmon.dll file is an unknown file in the Windows folder. The program is not visible. It is able to change the behavior of, or monitor Internet Explorer. It is not a Windows system file. Ctfmon.dll is able to connect to the Internet, record keyboard and mouse inputs, monitor applications and manipulate other programs.
Important: You should check the ctfmon.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.
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active ctfmon process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the ctfmon.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. 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.