The Msdia80.dll file is installed in the root folder of the boot drive when you install the Visual C++ 2005 Redistributable Package by using the Vcredist_x64.exe file or the Vcredist_ia64.exe file

You have a computer that is running a 64-bit operating system. You install the Microsoft Visual C++ 2005 Redistributable Package on this computer by using the Vcredist_x64.exe file or the Vcredist_ia64.exe file. When you do this, the Msdia80.dll file is installed in the root folder of the boot drive.

Note The correct path of the Msdia80.dll file is Drive:\Program Files\Common Files\Microsoft Shared\VC.

Important This issue applies to a product that is no longer supported.

To resolve this issue, install the Microsoft Visual C++ 2005 Service Pack 1 (SP1) Redistributable Package for Microsoft Visual Studio 2005 SP1 on the computer that is experiencing this issue.

For more information about the Visual C++ 2005 SP1 Redistributable Package for your 64-bit operating system, visit one of the following Microsoft Download Center Web sites:

Microsoft Visual C++ 2005 SP1 Redistributable Package (x64)Microsoft Visual C++ 2005 SP1 Redistributable Package (IA-64)

To temporarily work around this issue, move the Msdia80.dll file to the Drive:\Program Files\Common Files\Microsoft Shared\VC folder. Then, type the following command at a command prompt to register the Msdia80.dll file: