If the Windows installer has stopped working or the service itself has stopped, one troubleshooting technique is to unregister, and then re-register the Windows installer. This is for Windows 2000 but see below for other versions covered.

  1. Open an elevated command prompt
  2. Type msiexec /unreg and hit ‘enter'
  3. There is no confirmation that anything has happened. As long as there are no errors, the command went through
  4. Type msiexec /regserver and hit ‘enter'
  5. There is no confirmation that anything has happened. As long as there are no errors, the command went through.
  6. Restart the computer
  7. Try to install the program again

Source: Method 1 from Microsoft Support.

Installer Error Message or Symptoms

This error doesn't occur in Windows XP but you may see something similar in Windows Vista and 7.

By clicking on a setup executable, you see an error along the lines of Windows Installer has stopped working.

Another symptom is trying to install .MSI files and having a command prompt opening then closing with nothing happening. If you try to open the files from a command prompt, you get an error along the lines of The program is too big to fit in memory.

Starting the Windows Installer Service

  1. Click Start > type Services.msc and press Enter.
  2. Double-click Windows Installer.
  3. Set Startup type of Windows Installer to Manual.
  4. Click Start to start the service and then click OK.

Source: Windows Installer Question from Microsoft Answers.

There you have it, a couple fixes for the Windows Installer has stopped working error(s). You should be back to installing things in no time.

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