How to Install an Update Mum on Vista

A MUM file is a type of file used by the Windows Update Agent in Windows Vista. The Update Agent downloads and applies Microsoft software updates -- such as operating system hotfixes, security updates and bug fix updates -- to your Windows Vista computer according to a schedule you choose. All of the files the Update Agent needs to install an update are contained in MUM files for use on Windows Vista. If your computer does not have the Windows Update Agent you will not be able to install an update MUM. However, you can manually download and install the Windows Update Agent from a knowledge base page on the Microsoft web site.

Difficulty: Easy

Instructions

1. Open your browser and navigate to KB Article 949104 on the Microsoft Web site.

2. Click the Windows Update Agent download and save the file to the desktop on your Windows Vista computer.

3. Double-click the Windows Update Agent installer icon on the desktop. This starts the setup wizard.

4. Follow the prompts in the wizard. Close the wizard when it finishes.

5. Shut down, then restart your computer to complete the process.

References

• Definition of a MUM file

Resources

• KB Article 949104 with download link on Microsoft website