Applies ToWindows 8.1 Enterprise Windows 8.1 Windows 8.1 Pro Windows Server 2012 R2 Datacenter Windows Server 2012 R2 Essentials Windows Server 2012 R2 Standard Windows Server 2012 R2 Foundation Windows RT 8.1 Windows 8 Enterprise Windows 8 Windows 8 Pro Windows RT Windows Server 2012 Datacenter Windows Server 2012 Datacenter Windows Server 2012 Essentials Windows Server 2012 Foundation Windows Server 2012 Foundation Windows Server 2012 Standard Windows Server 2012 Standard Windows 7 Enterprise Windows 7 Home Basic Windows 7 Home Premium Windows 7 Professional Windows 7 Ultimate Windows Server 2008 R2 Enterprise Windows Server 2008 R2 Datacenter Windows Server 2008 R2 Foundation Windows Server 2008 R2 Standard Windows Server 2008 Enterprise Windows Server 2008 Datacenter Windows Server 2008 Foundation Windows Server 2008 Standard Windows Vista Home Basic Windows Vista Home Premium Windows Vista Ultimate Windows Vista Business Windows Vista Enterprise Windows Vista Home Basic 64-bit Edition Windows Vista Home Premium 64-bit Edition Windows Vista Ultimate 64-bit Edition Windows Vista Business 64-bit Edition Windows Vista Enterprise 64-bit Edition

Symptoms

When you install a .msu update package on a computer that is running Windows, you may receive the following error message:

The Windows Modules Installer must be updated before you can install this package. Please update the Windows Modules Installer on the computer, then retry Setup.

When you use a script to install the .msu update package, the installation fails. When this problem occurs, the Wusa.exe process returns error code 0x800f0823.

Cause

This problem occurs because the installation requires a new version of the Windows Modules Installer or the servicing stack.

Resolution

To resolve this problem, use Windows Update to update the Windows Modules Installer or the servicing stack. Or, download the updates that are listed in the following table from the Microsoft Download Center.

Operating System

KB Number

Windows Vista and Windows Server 2008

955430

Windows 7 and Windows Server 2008 R2

2533552

Windows 8 and Windows Server 2012

2871777

Windows 8.1 and Windows Server 2012 R2

2919442

More Information

When you use Windows Update, the Windows Modules Installer or the servicing stack update is required. However, when you install a .msu update package, the Setup program does not connect to Windows Update to update the Windows Modules Installer or the servicing stack.

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