dun.tol is a module belonging to America Online from America Online, Inc..
Non-system processes like dun.tol originate from software you installed on your system. Since most applications store data on your hard disk and in your system's registry, it is likely that your computer has suffered fragmentation and accumulated invalid entries which can affect your PC's performance.
In Windows Task Manager, you can see what CPU, memory, disk and network utilization is causing the DUN process. To access the Task Manager, hold down the Ctrl Shift Esc keys at the same time. These three buttons are located on the far left of your keyboard.
The dun.tol is an executable file on your computer's hard drive. This file contains machine code. If you start the software America Online on your PC, the commands contained in dun.tol will be executed on your PC. For this purpose, the file is loaded into the main memory (RAM) and runs there as a DUN process (also called a task).
dun.tol has not been assigned a security rating yet. The dun.tol file should be located in the folder C:Program Fileswmconnecttool. Otherwise it could be a Trojan.
dun.tol is unrated
Many non-system processes that are running can be stopped because they are not involved in running your operating system.
dun.tol is used by 'America Online'. This is an application created by 'America Online, Inc.'.
If you no longer use America Online, you can permanently remove this software and thus dun.tol from your PC. To do this, press the Windows key R at the same time and then type 'appwiz.cpl'. Then find America Online in the list of installed programs and uninstall this application.
This process is not considered CPU intensive. However, running too many processes on your system may affect your PC’s performance. To reduce system overload, you can use the Microsoft System Configuration Utility (MSConfig) or the Windows Task Manager to manually find and disable processes that launch upon start-up.
Use the Windows Resource Monitor to find out which processes and applications write/read the most on the hard drive, send the most data to the Internet, or use the most memory. To access the Resource Monitor, press the key combination Windows key R and then enter 'resmon'.
Most dun issues are caused by the application executing the process. The surest way to fix these errors is to update or uninstall this application. Therefore, please search the America Online, Inc. website for the latest America Online update.
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