sihost.exe is a program which is probably NOT a virus. So, if sihost.exe is on your PC, it is probably ok, and will NOT cause problems. Even if your system is clean, we still advise you to purchase a good antivirus with a good track record, in order to defend your PC against potential security problems.
This application is normally found on disk in C:\Windows\System32\sihost.exe.
The MD5 checksum for this executable is b34d06f429770b8c7a80fd5c83a13831.
This program is NOT registered as a Windows service. This is good.
sihost.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This executable runs in 32-bit mode. It can not exploit the full power of nowadays' PC CPUs. This ordinarily happens because the publishers did not upgrade it to 64-bit code.
The description written in the program is Shell Infrastructure Host.
File version extracted from the file 10.0.10586.0 (th2_release.151029-1700).
Company name Microsoft Corporation.
Copyright notice © Microsoft Corporation. All rights reserved..
sihost.exe has a digital signature. Today the large majority of serious software applications are digitally signed.
The digital signature attached to sihost.exe is valid. This is very good.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This executable does NOT have a removal routine set up in registry.