Windows XP - Running MSI files as administrator

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By default , upon right-cliking on an MSI file, the "Run as administrator" is missing. To have it back in the context menu:
  • Open the registry:
  • Click on Start > Run > type regedit
  • Scroll to: HKEY > CLASSES > ROOT > Msi.Package > Shell
  • Click on the Edit menu > New > Key
  • Rename it as "runas"
  • Double click the Default value.
  • Enter the text " Run as administrator" and click OK.
  • Select the runas key . Click the Edit menu, click New > Key.
  • Rename it as "command"
  • Double click on Default value.
  • Enter the command msiexec /i "% 1" and click OK.
  • Close the Registry Editor.

As from now each time you right click on an MSI file , the "Run as administrator" option will be present.

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