woinstall.exe is known to be a type of spyware. You need to remove this process from your computer as soon as possible.

Adware.W32.Ezula is a type of malware, and woinstall is linked to it. Since malware and essential files can have the same names, it is essential that you backup your computer before deleting files indiscriminately.

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With woinstall.exe already on your computer, there's probably more malware or viruses you haven't discovered. Get a free scan of your computer by clicking this link.