What Is an SVC Host Application Error?

Svchost.exe
The application svschost.exe is a standard part of the Microsoft Windows operating system. It acts as a host process for other applications, notably applications that use Dynamic Link Library (DLL) files.
DLL Files
A DLL file runs as a function of a program, application or process, but is stored as a separate file from the main program. This helps to save computer memory and other resources. DLL files need a host application to run, which is where svchost.exe comes into play.
Svchost.exe Errors
A svchost.exe application error can occur for a number of reasons. A common cause of this error is that a DLL file has been deleted or become corrupted. Another common cause is that there may be a problem with the Windows Automatic Updater (a fix is available directly from Microsoft).