The file mup.sys is connected to a process known as Multiple UNC Provider, also known as Multiple Universal Naming Convention Provider. The application is mainly used to access files from a remote computer source. The file mup.sys is the one responsible for handling queries for remote file I/O operations. When a request is sent, the I/O Manager calls on mup.sys so the request can be addressed, and the user can then gain access to the file being requested. The file is generally installed when you install your Windows Operating System. It has a standard file path of C:\Windows\System 32\Drivers\mup.sys. There have been a number of reports made by users that the file causes system boot hangs. It was later determined that it was not actually the file that caused the frozen system, but the system showed an error message regarding the file because it was at the point when mup.sys was loading, that system failure manifested, and the file was thought to be the culprit because it kept reloading itself in continuous loops, after resetting itself to try to correct the error. The actual culprits were found to be hard disk failure, corrupted registry, installation of new hardware was not completed or was found to be faulty, and hardware failure.
How can I stop mup.sys and should I?
Most non-system processes that are running can be stopped because they are not involved in running your operating system. mup.sys. is used by Microsoft Windows, If you shut down mup.sys, it will likely start again at a later time either after you restart your computer or after an application start. To stop mup.sys, permanently you need to uninstall the application that runs this process which in this case is Microsoft Windows, from your system.
After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.
Is this a virus or other security concern?
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What is a process and how do they affect my computer?
A process usually a part of an installed application such as Microsoft Windows, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.
Is mup.sys known to be bad for my computer's performance?
We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.
What can I do if mup.sys is causing errors on my computer?
The first thing you should do if mup.sys. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that mup.sys, belongs to, in this case Microsoft Windows