Stack Overflow
Stack Overflow

Questions tagged [win64]

all versions of the Windows operating system that run on 64-bit architecture

This tag covers all general programming issues for software running on Windows 64-bit operating systems (XP, 2003, Vista, etc.).

For programming questions about 64-bit architecture that are platform and operating system independent (in other words, for Linux, Mac, Windows, etc.), simply use the tag.

Check serverfault.com or superuser.com for general questions on the 64-bit architecture and its hardware.

See Microsoft's Programming Guide for 64-bit Windows for more information on programming for Windows 64-bit architecture.

222 questions
36
votes
3 answers

Memory leak in the Win64 Delphi RTL during thread shutdown?

For a long time I’ve noticed that the Win64 version of my server application leak memory. While the Win32 version works fine with a relatively stable memory footprint, the memory used by the 64 bit version increases regularly – maybe 20Mb/day,…
Adrien Reboisson
  • 631
  • 6
  • 15
33
votes
4 answers

How do I install Python 2.7.3 32 bit and 64 bit on Windows side by side

I have Windows Vista 64. I have some projects requiring Python 2.7.3 64 bit and others requiring Python 2.7.3 32 bit (because some extensions do not work in 64 bit). How do I prevent the Python 2.7.3 MSI installer (32 or 64 bot) from deleting the…
Ruediger Jungbeck
  • 2,836
  • 5
  • 36
  • 59
32
votes
4 answers

Why 2 GB memory limit when running in 64 bit Windows?

I'm a member in a team that develop a Delphi application. The memory requirements are huge. 500 MB is normal but in some cases it got out of memory exception. The memory allocated in that cases is typically between 1000 - 1700 MB. We of course want…
Roland Bengtsson
  • 5,058
  • 9
  • 58
  • 99
25
votes
9 answers

ImportError: The 'enchant' C library was not found. Please install it via your OS package manager, or use a pre-built binary wheel from PyPI

The question is why I see the error message in the title when trying to import enchant. I am using Win64.
1man
  • 5,216
  • 7
  • 42
  • 56
23
votes
1 answer

rundll32.exe equivalent for 64-bit DLLs

Is there an equivalent of rundll32.exe for calling 64-bit DLLs?
edotan
  • 231
  • 1
  • 2
  • 3
21
votes
5 answers

psql: FATAL: password authentication failed for user windows 8

I installed postgresql on windows and while the installation it asks to make a user for the account.This made a new windows user in my computer called postgres, I have created a password for it as well. Now I want to run psql on windows command…
Sarah cartenz
  • 1,313
  • 2
  • 14
  • 37
20
votes
8 answers

How do you compile OpenSSL for x64?

After following the instructions in INSTALL.W64 I have two problems: The code is still written to the "out32" folder. I need to be able to link to both 32-bit and 64-bit versions of the library on my workstation, so I don't want the 64-bit versions…
kgriffs
  • 4,080
  • 5
  • 37
  • 42
19
votes
2 answers

Is reserving stack space necessary for functions less than four arguments?

Just started learning x64 assembly and I have a question about functions, arguments, and the stack. As far as I understand it, the first four arguments in a function get passed to rcx, rdx, r8, and r9 registers (and xmm0-xmm3 for floats) in…
Don
  • 275
  • 5
  • 14
18
votes
5 answers

64-bit Windows API: what is the size of a C/C++ "DWORD"?

I only have 32-bit Windows installed, so I cannot verify this myself. If I understand correctly, the DWORD used in various places in the Microsoft API is in reference to the original 16-bit word, and has nothing to do with the current hardware…
Stéphane
  • 19,459
  • 24
  • 95
  • 136
14
votes
4 answers

PyPy on Windows 7 x64?

I am trying to use PyPy on a Windows 7 x64 machine but do not find any way to do it. Apparently there is a win32 binary, but no x64 binary or installation guide. I am currently using Python 2.7.2 win64 (Python 2.7.2 (default, Jun 12 2011, 14:24:46)…
Thomas
  • 1,053
  • 2
  • 11
  • 20
13
votes
6 answers

How do I resolve "%1 is not a valid Win32 application"?

Environment: Windows Server 2003 R2 Enterprise 64bit, SP2 .NET framework is supposedly installed (2.0 SP2, 3.0 SP2, 3.5 SP1) I say "supposedly" because they are listed as installed under Add/Remove programs. I'm not sure it's properly installed,…
Adam Tuttle
  • 19,505
  • 17
  • 80
  • 113
11
votes
2 answers

Can JetBrains Rider work properly with IISExpress?

The JetBrains Rider I'm using is the latest version, 2019.1.2 (free 30-day trial), from the official website. It's not a broken version. I have a solution which contains an ASP.NET web API csproj. The solution was working properly in IIS, or VS +…
David Smith
  • 893
  • 2
  • 9
  • 19
11
votes
1 answer

Virtual allocation granularity and page size

What are the typical values of the virtual allocation granularity and page size on Win64 platforms? That'd be SYSTEM_INFO's dwAllocationGranularity and dwPageSize. On Win32 systems these would be 64k and 4k. I need to know because I've designed a…
fbonnet
  • 2,325
  • 14
  • 23
11
votes
5 answers

Unresolved external symbols in compiling 32 bit application in Windows 64

So I am trying to compile legacy app from 32 bit to 64 bit.. I re-compiled all of the libs it used and made it look into WIN SDK6.0A x64 bit for libs.. I am using: Visual Studio Professional Edition 2008 Visual C++ dotNet Framework 3.5 SP1 Windows…
grobartn
  • 3,510
  • 11
  • 40
  • 52
11
votes
3 answers

Write large file

I try to write to a large file, but it seems like it does not work for files larger than 2GB. I have tried with boost::iostreams::file_sink. Is this just a limit with the boost stream? Is there some other way I can write a large file on Win64 and…
user38941
  • 113
  • 1
  • 4
1
2 3
…
14 15