sihost.exe is a program which is most likely NOT a virus. So, if sihost.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your system is clean, it is still recommended to purchase a well-known antivirus with a good track record, in order to yourself your system against threats.
This program is usually stored in C:\Windows\System32\sihost.exe.
The MD5 fingerprint for this program is b34d06f429770b8c7a80fd5c83a13831.
This program does NOT operate as a Windows service. This is normally a good sign.
sihost.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
This application runs in 32-bit mode. It can not exploit the full power of current computer processors. This ordinarily happens because the publishers did not upgrade it to 64-bit code.
The description extracted from the program is Shell Infrastructure Host.
File version extracted from the file 10.0.10586.0 (th2_release.151029-1700).
Author Microsoft Corporation.
Copyright notice © Microsoft Corporation. All rights reserved..
sihost.exe has a digital signature. Today most legit software applications are digitally signed.
The digital signature extracted from sihost.exe checks out perfectly. This is excellent.
Digitally signed by: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This application does NOT have an uninstall command set up in registry.