GetFileVersionInfo() returns wrong file's version information

问题

I have an application that is required to check the versions of various system EXEs and DLLs to determine if they are vulnerable or not. This is a native C++ application which does not provide any specific WinSxS linkages in its manifest. On Windows 7, when I invoke GetFileVersionInfo on an absolute path, for example "c:\windows\system32\taskeng.exe", I receive the version information for "C:\Windows\winsxs\x86_microsoft-windows-taskscheduler-engine_31bf3856ad364e35_6.1.7600.16385_none_e582a352202e02c8\taskeng.exe"

So, to clarify, the version c:\windows\system32\taskeng.exe reported by Windows Explorer is 6.1.7600.16699. The version of c:\windows\system32\taskeng.exe reported by GetFileVersionInfo() is 6.1.7600.16385.

How do I force my app to not have its file redirected via WinSxS?

回答1:

Are you sure you are looking at the correct fields? GetFileVersionInfo() gives me the same thing as Explorer with one caveat: the FileVersion in the StringFileInfo is 6.1.7600.16385 whereas the FileVersion in the VS_FIXEDFILEINFO is 6.1.7600.16699. Explorer is showing the FileVersion from the VS_FIXEDFILEINFO. I guess Microsoft just didn't update the StringFileInfo for some reason.

回答2:

Here's a PowerShell script to show the difference. FileVersion is a string that is different than the composition of [FileMajorPart].[FileMinorPart].[FileBuildPart].[FilePrivatePart].

PS C:\> [System.Diagnostics.FileVersionInfo]::GetVersionInfo("c:\windows\system32\taskeng.exe") | Format-List -property *


Comments           :
CompanyName        : Microsoft Corporation
FileBuildPart      : 7601
FileDescription    : Task Scheduler Engine
FileMajorPart      : 6
FileMinorPart      : 1
FileName           : c:\windows\system32\taskeng.exe
FilePrivatePart    : 17514
FileVersion        : 6.1.7600.16385 (win7_rtm.090713-1255)
InternalName       : TaskEng
IsDebug            : False
IsPatched          : False
IsPrivateBuild     : False
IsPreRelease       : False
IsSpecialBuild     : False
Language           : English (United States)
LegalCopyright     : © Microsoft Corporation. All rights reserved.
LegalTrademarks    :
OriginalFilename   : taskeng.exe.mui
PrivateBuild       :
ProductBuildPart   : 7601
ProductMajorPart   : 6
ProductMinorPart   : 1
ProductName        : Microsoft® Windows® Operating System
ProductPrivatePart : 17514
ProductVersion     : 6.1.7600.16385
SpecialBuild       :

来源：https://stackoverflow.com/questions/5263954/getfileversioninfo-returns-wrong-files-version-information

标签

winapi

winsxs