The file ycompanion.dll belongs to Yahoo! Companion from Yahoo! Inc. The Yahoo! Companion is a toolbar that Yahoo! created to enhance their users’ browsing experience. Yahoo! Companion adds a search bar and anti-spyware tool, along with other personalization options.
This toolbar also tracks your internet usage, but does not link your name or computer to the data nor serve up advertisements based on that information, so it is not considered spyware by most industry experts. An error with this dynamic link library file will disable the functions of the toolbar, so you will want to clean your registry to fix the problem.
Your Windows registry is the way Windows knows how to find and run the files that make up all the programs on your computer. Each file has an entry with that vital information in the registry. A mistake in a registry entry will break any programs that need that file.
ZookaWare PC Cleaner cleans up registry mistakes to get your system in action again. ZookaWare PC Cleaner hunts down and repairs every error in your registry, guaranteed.