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Program info

Estimated safety rating


prevhost.exe is a program which is most likely NOT a virus. So, if prevhost.exe is on your laptop or desktop computer, it is most likely ok, and will NOT be a cause for concern. Even if your PC is virus-free, it is still recommended to use a well-known antivirus with a good track record, in order to defend your PC against viruses and malware.

Executable file path


This program is usually found on disk in C:\Windows\System32\prevhost.exe.

MD5 hash of the executable file


The MD5 checksum for this program is 5fac5f264d61d99ee8961480818b9def.

Is running as a service


This program does NOT run as a Windows service. This is usually a good sign.

Belongs to the operating system


prevhost.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.

Is a 64 bit executable file


64-bit code has been detected. This program can use the full power of a modern computer cpu.

File description

 Preview Handler Surrogate Host

The description written in the exe is Preview Handler Surrogate Host.

File version

 6.1.7601.17562 (win7sp1_gdr.110217-1504)

File version extracted from the file 6.1.7601.17562 (win7sp1_gdr.110217-1504).


 Microsoft Corporation

Company Microsoft Corporation.


 © Microsoft Corporation. All rights reserved.

Intellectual property rights notice © Microsoft Corporation. All rights reserved..

Has valid windows


This application does NOT have visible windows. This is most likely a bad sign.

Digitally signed


prevhost.exe is digitally signed. Today the large majority of serious software applications are digitally signed.

Valid digital signature


The digital signature extracted from prevhost.exe checks out perfectly. This is excellent.

Certifier name

 Microsoft Windows

Digital certificate name: Microsoft Windows

Issuer name

 Microsoft Windows Verification PCA

Certificate's issuer name: Microsoft Windows Verification PCA

Can be uninstalled


This program does NOT have a removal routine stored in registry.