Win8MUIS.exe is part of a product called known as Win Eight Metro UI Switcher and the developer is SuperUtils.com .
If you think that this file contains a virus or another malware, please download a virus scanner.
If Win8MUIS.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Win Eight Metro UI Switcher from the list to remove the process Win8MUIS.exe from your computer.
If you have any problems with Win8MUIS.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting SuperUtils.com, the developer of Win8MUIS.exe and ask for more information.