The avshellext.dll file pertains to the process called Windows Live OneCare AV Shell Extension that is used by the program Windows Live OneCare developed by Microsoft Corporation. This DLL file is located in the C:\Program Files subfolder. Known sizes for this file include 34,664 bytes, 31,024 bytes, 37,928 bytes, 34,176 bytes and 30,952 bytes with 28% occurrence. A DLL file is a Windows application that can work with other applications such as another executable program or other DLL files. Windows Live OneCare, formerly called Windows OneCare Live or codenamed A1, is a service developed by Microsoft to provide performance improvement and computer security. Its core technology is the multi-platform Reliable Antiviurs or RAV that the company purchased in 2003 from GeCAD Software Srl. It has been available through paid annual subscription for a maximum of 3 computers. It has been discontinued eventually. Microsoft replaced Windows Live OneCare on November 18, 2008 with a free anti-malware suite known as Microsoft Security Essentials.

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

A process usually a part of an installed application such as Windows Live OneCare, 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 avshellext.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 avshellext.dll, belongs to, in this case Windows Live OneCare