Most antivirus programs identify win16dll.exe as malware—e.g. TrendMicro identifies it as SPYW_SCREENSPY, and Symantec identifies it as Spyware.Screenspy.
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Description: Win16dll.exe is not essential for Windows and will often cause problems. The file win16dll.exe is located in a subfolder of C:\Windows\System32.
The file size on Windows 10/8/7/XP is 188,416 bytes.
The process has no file description. The software is loaded during the Windows boot process (see Registry key: MACHINE\Run). It is not a Windows core file. It is located in the Windows folder, but it is not a Windows core file. The program is not visible. Win16dll.exe is able to record keyboard and mouse inputs and hide itself. Therefore the technical security rating is 68% dangerous.
Recommended: Identify win16dll.exe related errors
Important: You should check the win16dll.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.
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active win16dll process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the win16dll.exe 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.