FIX: Another installation is already in progress error

Sometimes, when you try to install a program in Windows, you may receive the error message as another installation is already in progress, and you will be unable to proceed with the installation. This error can be removed in several ways; some of these are as follows:

1. Restart the Windows installer service

For proper working, Windows relies on its services; the service that is in charge of installing new software is called Windows installer. Due to some repair or uninstall processes that might be started automatically in the background, it can require Windows installer service to run. If you try to install another software while the Windows installer is running, you will undoubtedly face this error. To fix this problem, you can follow these steps:

  • To open the Run dialog, press Windows key+R.
  • Type services.msc and click the Ok button


  • A list of available services will appear. Find Windows installer on the list and double click on its Properties.

  • If the service is running, click the stop button to stop it. Wait for a while, and then click the start button to start again.

  • Close the service window and check if the problem is resolved

2. Disable windows installer service and restart your PC

If restarting does not help, you might want to disable windows installer service temporarily because windows installer service is the common culprit.

You might perform this simple process by following these steps:

  • To open the Run dialog, press Windows key+R.
  • Type services.msc and click the Ok button
  • Open the services window.
  • After opening the services window, locate the Windows installer service and double click to open its properties.
  • Set the startup to disabled and click apply or ok to save changes
  • After that, restart your PC
  • After starting your PC again, open the services window again.
  • Locate Windows installer and open its Properties
  • Set the startup type to manual and click apply and ok to save changes
  • Close the services window and try to perform the installation again.


By following the above methods, you can fix your problem if you find any during the installation process. The above two methods are the simplest one to fix another installation is already in progress error.

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