Apps & runtime · medium

How to fixINSTALLER-ERROR-1603

Windows Installer error 1603

What this error means

Windows Installer error 1603 ranks as a medium-severity software runtime issue in our database. Fatal error installing MSI package. Installation failed. The usual suspects are insufficient permissions, corrupt installer and full disk. Use the steps below to track down and fix the cause.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 4 complete
01Run the installer as administrator

Run the installer as administrator.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Uninstall the previous version

Uninstall the previous version.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Clean the temp folder

Clean the temp folder.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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04Run Windows Installer Cleanup

Run Windows Installer Cleanup.

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Insufficient permissions
  • Previous installation not removed
  • Corrupt installer
  • Full disk