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"The Windows Installer Service Could not be Accessed"

Solution for receiving the above error message in Windows XP.

To resolve the problem:

  1. Click on Start.
  2. Select Run.
  3. In the "Open:" field, type: cmd.
  4. Click OK.

An MS-DOS Prompt window will come up on the screen with a blinking cursor at the command line. In this window you will need to do the following:

  1. Type msiexec /unregister and press Enter.
  2. Type msiexec /regserver and press Enter.