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What is prevhost.exe?

Part of Preview Handler Surrogate Host by Microsoft

(prevhost.exe is a system file that is installed with Windows)
Download Boost and enjoy your PC. Speed up Preview Handler Surrogate Host and optimize your PC.

How does prevhost.exe run?

Process - prevhost.exe is an instance of a running program. This 64-bit program executes with the privileges as the currently logged in user account. prevhost.exe is executed by the process svchost.exe (Host Process for Windows Services by Microsoft).


What is the community is seeing?What is the community is doing?
About 0.1% of all Boost users have the prevhost.exe process running.Of the 0.1% of prevhost.exe users, less than 1% have disabled it.
How stable is Preview Handler Surrogate Host?
Based on crash data discovered by Boost, stability is a measure of how sound this particular process and the average percent of times it crashes.
Typical program1.26%
How resource intensive is prevhost.exe?
Comparison based on the average resource utilization across all programs.
0.00011% CPU1084.0%
Average CPU utilization across all programs is 0.00001%.
          6.37 MB RAM29.6%
Average private memory utilization across all programs is 21.53 MB.
         15 GDI objects10.0%
Average number of GUI GDI and USER objects for all programs is 150.
Typical file (disk image) location:

Are there other versions of Preview Handler Surrogate Host?

Why are multiple of the same versions listed?

What modules are loaded?

A module is a dynamic link library (DLL) or an executable file that is loaded into the process. Below is a list of non-system modules that are loaded by Preview Handler Surrogate Host.

What else is related?

Preview Handler Surrogate Host Stability

prevhost.exe crashes or has encountered a critical error 0.8900% of the time.
Error: Stopped working (APPCRASH)
Crashing module: mshtml.dll (still researching...)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Windows 7 Home Premium (6.1.7601.65536)
Windows 7 Professional (6.1.7601.65536)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: prevhost.exe
Publisher: Microsoft Corporation (verified)
Name: Preview Handler Surrogate Host
Description: Microsoft® Windows® Operating System
Version: 6.1.7601.17562 (win7sp1_gdr.110217-1504)
Product version: 6.1.7601.17562
Size: 30.5 KB
Original file name: PREVHOST.EXE
Windows file protection: Yes

Resource utilization

CPU utilization averages
Total CPU: 0.0004324184%
Privileged CPU: 0.0003240191%
User CPU: 0.00010839929438%
Privileged CPU time: 31537.16 ms
Privileged CPU time /min: 0 ms
CPU cycle count: 152,946,610
Memory utilization averages
Committed memory: 89.32 MB
Peak committed memory: 100.03 MB
Paged memory: 6.37 MB
Peak paged memory: 7.1 MB
Paged system memory: 168.89 KB
Non-paged system memory: 10.15 KB
Working set memory: 14.5 MB
Peak working set memory: 18.11 MB
Min working set memory: 10.51 MB
Private memory: 6.37 MB
Page faults: 11,538
Page faults /min: 0
Process I/O averages
Total read operations: 134
Total read transfer: 33.37 KB
Total write operations: 1,438
Total write transfer: 2.8 MB
Total other operations: 3,404
Total other transfer: 8.16 KB
GUI Object Averages
GDI objects: 15
Peak GDI objects: 19
USER objects: 11
Peak USER objects: 16
Handle count average: 121
Thread count average: 4
Thread resource averages

Process details

Runs as (owner): User
Integrety level: Low
Windows platform: 64-bit
Parent Process
Process Command
C:\Windows\system32\prevhost.exe {914FEED8-267A-4BAA-B8AA-21E233792679} -Embedding

Network connectivity

UDP: LISTENING on port 65523

Image hashes

MD5: 5fac5f264d61d99ee8961480818b9def
SHA-1: 7350394ea21974a0689800f2c7deec86c01d30b2
SHA-256: e9717c3c3cb0a8e48764edcf90c7c9287b659489661dc5e6f845e1124d9378b9

PE image details

Subsystem: Windows GUI
Langauge*: Microsoft Visual C++
File packed: No
Import Table
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