What is sihost.exe?

Sihost.exe is a Windows system process that manages the creation of Universal Windows Platform (UWP) apps on the desktop. It is located in the C:\Windows\System32 directory and is associated with the Windows Shell Infrastructure Host. Sihost.exe helps to improve the performance and reliability of the system by running UWP apps in a separate process, preventing them from crashing the system. It is an essential process for Windows operating systems, and terminating it can cause system instability or crashes.