The contexttool-1.dll file has been identified by the system security tools of many users as a malicious application associated with the AdWare.Win32.Agent.vm program, which is a family of obtrusive adware items, BHOs (Browser Helper Objects) and Web browser hijackers known to infect unprotected Windows-based systems with outdated OS security certificates, old versions of Internet Explorer and an unsecured Windows System Registry. These users claim that the contexttool-1.dll malware is capable of hijacking the homepage and search page settings of Internet Explorer after being activated by one of its EXE component processes during system startup. These users also state that the executable component processes of the contexttool-1.dll malware are able to automatically initialize during system startup because of certain keys and entries these EXE files can create and insert into the unsecured Windows System Registry of unprotected Windows-based computers upon their successful placement and activation in the system. These users also claim that the contexttool-1.dll malware is capable of displaying pop-up advertisements while the user is browsing the Internet. Other users have reported that their anti-malware applications flag the contexttool-1.dll file as a variant of the Trojan.Adclicker program, which is a family of Trojans and worms with spyware components that are known to exploit unencrypted TCP/IP network ports of unprotected Windows-based computers to secretly download more malicious applications unto the system.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. contexttool-1.dll. is used by AdWare.Win32.Agent.vm and Trojan.Adclicker, If you shut down contexttool-1.dll, it will likely start again at a later time either after you restart your computer or after an application start. To stop contexttool-1.dll, permanently you need to uninstall the application that runs this process which in this case is AdWare.Win32.Agent.vm and Trojan.Adclicker, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed contexttool-1.dll

A process usually a part of an installed application such as AdWare.Win32.Agent.vm and Trojan.Adclicker, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if contexttool-1.dll. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that contexttool-1.dll, belongs to, in this case AdWare.Win32.Agent.vm and Trojan.Adclicker