Note: Be sure to always double check your spelling if you are concerned about spyware, as often spyware will use a very similar spelling of system processes or other common tasks.

Description: YTSingleInstance.dll is a file that most likely was installed by you at some point, this would not have arrived preinstalled on your computer. Be sure to verify the exact hard drive location shown below. This file will run as a BHO in your browser everytime you browse the internet. This file is installed with Yahoo instant messenger, and this can also be removed without affecting your Yahoo IM. If you wish to remove this file, simply use a BHO remover to remove it from your browser, your Yahoo IM will continue to run fine without any issues. This file is considered safe and is not spyware or adware related software.