When you build an application in Microsoft Visual Studio 2005 or in Microsoft Visual Studio .NET , and the application
uses the C run-time libraries (CRT), distribute the appropriate CRT DLL from the following list with your
application and install the DLL in your Program Files directory:
| • | Msvcr80.dll for Microsoft Visual C++ 2005 |
| • | Msvcr71.dll for Microsoft Visual C++ .NET 2003 with the Microsoft .NET Framework 1.1 |
| • | Msvcr70.dll for Microsoft Visual C++ .NET 2002 with the Microsoft .NET Framework 1.0 |
Do this
instead of installing the DLL in the system directories. Do not assume that the
DLL already exists in the system directories.
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The shared CRT DLL has been distributed by
Microsoft in the past as a shared system component. This may cause problems
when you run applications that are linked to a different version of the CRT on
computers that do not have the correct versions of the CRT DLL installed. This
is commonly referred to as the "DLL Conflict" problem.
To address
this issue, the CRT DLL is no longer considered a system file, therefore,
distribute the CRT DLL with any application that relies on it. Because it is no
longer a system component, install it in your applications Program Files
directory with other application-specific code. This prevents your application
from using other versions of the CRT library that may be installed on the
system paths.
Visual C++ 2005 or Visual C++ .NET installs the CRT DLL in the System32
directory on a development system. This is installed as a convenience for the
developer. Otherwise, all projects that are built with Visual C++ 2005 or Visual C++ .NET that
link with the shared CRT require a copy of the DLL in the build directory for
debugging and execution.
When you distribute applications that
require the Shared CRT library in the CRT DLL, we recommend that you use
the VC_CRT.msm merge module that is included with Visual C++ 2005 or with Visual C++ .NET instead
of directly distributing the DLL file.
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For more information, visit the following Microsoft
Developer Network (MSDN) Web site:
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