Programs won’t install, Another installation is already in progress

Sometimes, when you try to install a program in Windows, you may receive the following error message and you will be unable to proceed with the installation:

Another installation is already in progress, Complete that installation before proceeding with this install

Another installation is already in progress

If you receive this message, the probable cause could be that another installation, repair or uninstallation process would actually be running. If this is the case, wait for it to complete and try again. If no such process is running, here are a few steps you may want to try:

1] Restart your computer and try to install.

2] Run Disk Cleanup utility or CCleaner to clean up temporary files.

3] Scan your PC with you anti-virus and anti-spyware.

4] If you still receive the same error message, my colleague Vijay suggests that you do the following:

Another installation is already in progress

Type services.msc in start menu and hit enter to open Services Manager.

Scroll down to the Windows Installer Service and double-click on it.

Stop the Service and then restart it.

Now try to install the program. It should help.

Related read: There is a problem with this Windows Installer package.

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Posted by on , in Category Windows with Tags
Anand Khanse is the Admin of, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.


  1. Ian M Williams

    thank you that restart helped

  2. Willem Wannenburg

    the textbox wherein the “disable” or “stop” commands are disabled; i can’t really click on them. Know a solution for that?


    I am having this problem as well

  4. ZotacTiger

    Me too, (windows 10)

  5. Nikki Mitchell

    i cant click on them, any other help really greatful

  6. PeterScriabin

    Me too (10)

  7. DvK

    Had the same issue, workaround:

    Open Task Manager (ctrl+alt+del) and find Windows Installer as a background proces. End this progres, now “start’ should not be grayed out anymore, click it to start the service. Then install your program as desired.

  8. Regner Van Richford

    OMG! Thanks, dude! I can’t install Nexus Mod Manager for months because I have this Microsoft .NET problem! Then came this post! Dude, I love you! xD

  9. RuThaN

    This helped me.

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