When you try to install the software development kit (SDK) for Windows 7 and the .NET Framework 4 (Windows 7.1 SDK), the attempt is unsuccessful. Additionally, one of the following errors is logged in the installation log (%temp%\SDKSetup_7*.log):
- Error 1C:\Program Files\Microsoft SDKs\Windows\v7.1\Setup\SFX\vcredist_x64.exe installation failed with return code 5100
- Error 2Installation of Product Microsoft Windows SDK for Windows 7 (failed): This installation package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer package.