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Questions tagged [wow64]

WOW64 is a subsystem of 64-bit Windows. Add this tag for WOW64 related questions.

WOW64 (Windows 32-bit on Windows 64-bit) is a subsystem of the Windows operating system capable of running 32-bit applications on 64-bit Windows. It is included in all 64-bit versions of Windows.

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Test if Parent's Wow64 Redirection is Disabled

How do you test if your parent process has disabled WOW64 redirection?
user541686
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.net web app performing slowly on 64-bit windows / iis 7.5

I've got a web app written in asp.net 3.5 / sql server 2005 and it runs extremely fast on my local machine (winXP) & test server (win2003) however some pages run very slowly when on the production server which is running win2008 r2. The web app…
user226722
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Application Pool - Enable 32-bit application = false generating stack overflow error

If set it True - IIS > Application Pools > DefaultApplicationPool > Enable32BitApplication then application working fine. But, if set it False then application running but after logging, it showing StackOverflowException. .Net FrameWork: 4.0 Why its…
Umang Shah
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How much benefit is there to running 64-bit instead of 32-bit application on Windows, assuming the application is bottlenecked by RAM?

I have some conceptions I will lay out first. A 32-bit Windows application can't address more than ~3 GB of memory if I got it right. However, when it runs out of memory in its virtual address space, it will hand over data to the Windows virtual…
Magnus
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Simplest way to determine if current assembly is 32/64bit within the code

I‘m wondering what would be the simplest way to determine if the current assembly (specifically: programmatically check if the program itself) is 32 or 64 bit code. Current example: I‘m building a C++ app on Windows/VS that is built as a x86 and as…
loopend
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IIS8 enable 32bit applications

I have a server Windows Server 2012 with 8GB RAM. When I used Enable 32-Bit Applications in IIS, what is the maximum RAM can I use with this option? What is the difference in RAM loaded with set enable 32 bit applications to true and false?
Manal
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Windows 10 wow64 not present

I need to reinstall IIS Express 10 on windows 10 as it was corrupted and but after much searching I could only find the 32 bit version or an AMD64 bit version. To install the 32 bit version I have tried amending the IIS windows component to allow…
AJF
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How many concurrently-running threads can a WOW64 process have?

Let me start by clarifying two aspects: (1) by concurrently-running, I mean executing on the hardware at any one point in time, rather than being in some other OS state such as ready or waiting; and (2) assume that the hardware has a sufficiently…
user9774662
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Disable WoW64 Redirection

I can't found a solution for this problem. I need to be able to launch cmd.exe 64bit from a 32bit VBScript. I was thinking that exists something like the Wow64DisableWow64FsRedirection from Windows API, but I can't find anything for VBS. There is a…
Mutu A.
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Jenkins: Run Windows batch commands in 32-bit mode

Using Jenkins, we have setup automation testing - install application and run test cases in a remote machine. This process is done using a batch file. As it is a windows application I have to logout (remote machine) of the system keeping the session…
Sampath
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How to get a reliable memory usage information for a 64-bit process from a 32-bit process?

My goal is to get memory usage information for an arbitrary process. I do the following from my 32-bit process: HANDLE hProc = ::OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION | PROCESS_VM_READ, 0, pid); if(hProc) { PROCESS_MEMORY_COUNTERS_EX pmx…
c00000fd
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WOW64 Redirection and LoadLibrary

I'm trying to build a 32-bit program that can run correctly on 64-bit Windows; that is, if it needs to open a text file for the user, the file needs to not be redirected from C:\Program Files to C:\Program Files (x86). However, if I just call…
user541686
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Getting ExpandEnvironmentStrings() to return 64 bits paths

I am writing a program that requires to run in 32 bits mode. This program reads the registry for file path and some are written using Windows environment variables such as "%PROGRAMFILES%\MySoftware". My problem is that when I use…
Nifaal
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SQL Server 2012 Express (x64) cannot upgrade the existing instance of SQL Server Express (x64 WoW) named 'SQLEXPRESS'

Microsoft SQL Server 2005 Express edition is already installed. I added SQL Server 2012 Express in Prerequisite in Windows Installer. I'm getting this error while installing setup at start Can not install different instance. Required instance name…
Dev
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How can Thread Environment Blocks reside above the address space limit?

I recently noticed that the 32-bit version of Cheat Engine has its Thread Environment Block at a higher address than what is available to the 32-bit address space. To my knowledge user space is only accessible up to address 0x7FFFFFFF, but this TEB…
Mikubyte
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