What is stmctrl.dll?

Stmctrl.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 stmctrl.dll is a Windows system file or if it belongs to an application that you can trust.

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Stmctrl.dll file information

The process known as ADSL modem helper library belongs to software Unicorn ADSL or BeWAN ADSL Modem by AccessMedia or BeWAN systems ( or ZyXEL.

Description: Stmctrl.dll is not essential for Windows and will often cause problems. Stmctrl.dll is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 151,552 bytes (85% of all occurrences) or 155,648 bytes. 
The program has a visible window. The application is loaded during the Windows boot process (see Registry key: MACHINE\Run). It is not a Windows system file. Stmctrl.dll is able to record keyboard and mouse inputs. Therefore the technical security rating is 18% dangerous; however you should also read the user reviews.

Recommended: Identify stmctrl.dll related errors

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

initialise DSL modem

Summary: Average user rating of stmctrl.dll: based on 1 vote with 1 user comment. One user thinks it's neither essential nor dangerous.

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Best practices for resolving stmctrl issues

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

stmctrl.dll [all]