I simply need to install a program into my computer, but whenever I try to it says, "Another installation is in progress. You must complete that installation before continuing this one". When I looked up how to solve this, a post said:

On the Registry Editor (regedit.exe), navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\InProgress and delete the entries you can find.

I accessed this folder, but the only program there was (Default) REG_SZ I tried to delete it and a pop up said something like, unable to delete value. What do I delete, or how do I fix my original problem?

  • The solution for is to restart your machine
    – Ramhound
    Dec 28, 2016 at 13:28
  • I have restarted the computer multiple times but it still shows up Dec 29, 2016 at 6:36

1 Answer 1


First, if you have not done this already, restart the computer.

If it still refuses to install after that, and the InProgress key is still there, delete the key itself. Do not do this without having restarted the computer first.

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