Whenever you are searching for any keyword on the address bar of your web browser it is redirected to questscan.com search engine instead of searching for results in the Google or any other default search engine. It displays very limited and commercial results most of the time. Many users will likely find this a confusing experience because QuestScan changes the way you search the web. Besides, many users don't even know what QuestScan is. That's usually because only a small number of users will actually read the EULA or they will not fully understand they are consenting to the installation of advertising software. On the other hand, there's a great chance that such information is not always clearly presented.
Kill malicious Processes from Task Manager:
Location of the infection:
Although it is possible to manually remove QuestScan, such activity can permanently damage your system if any mistakes are made in the process, as advanced spyware parasites are able to automatically repair themselves if not completely removed. Thus, manual spyware removal is recommended for experienced users only, such as IT specialists or highly qualified system administrators. For other users, we recommend malware and spyware removal applications.