Fixing error 1500 for Windows 10

When the software installation hangs, you will receive the following error message while installing the software: “Error 1500. Another installation in progress. You must complete this installation before proceeding. ” This is due to either multiple MSI (Microsoft Installer) installers running at the same time, or an unfinished key left over from a previous installation.

Closing background software processes

  • Open the task manager: simultaneously hold down the ctrl + shift + esc keys.
  • We go to the “Processes” tab at the top of the “Task Manager” window.
  • Then find msiexec.exe, installer.exe, and setup.exe listed under Background Processes.
  • Select these processes and end one at a time. LMB on “Remove task”.
  • Try opening the error app again.

Clean Boot Windows

  • Open “Start”, write “msconfig”, press enter.
  • In the “General” tab, select “Selective startup”, uncheck the “Load startup items” checkbox, then “apply” and “ok”.
  • Go to the “services” section, put a checkmark in front of “Do not display Microsoft services” and click on the “Disable all” field. We save.
  • After the actions, you will be prompted to restart your computer. We accept. This should fix the error.

To return “everything as it was”:

  • Click “Start”, in the “Start Search” field, enter msconfig and click enter.
  • Select Normal Startup, click Apply and OK.

 Running Windows System File Checker

  1. Open “start” and enter “command line”, right-click, run as administrator.
  2. We enter “sfc / scannow“ in the command line window and press Enter.

This will start checking the system command line file, which will take some time.

Manually reset Windows update components

  1. Run Command Prompt as Administrator.
  2. Enter the following commands in turn, waiting for a while after each operation. After entering, press Enter for each command.
  • net stop wuauserv;
  • net stop cryptSvc;
  • net stop bits;
  • net stop msiserver.

Now rename the SoftwareDistribution folder by entering the following commands:

  • ren C: WindowsSoftwareDistribution SoftwareDistribution.old;
  • ren C: WindowsSystem32catroot2 Catroot2.old.

Restart the update components that you stopped earlier in step 2. Completely repeat step 2, but now instead of the word stop we write start. Example: “net start wuauserv”. Close Command Prompt, restart your PC and check if the error is gone. If the problem persists, contact

Microsoft support

or reinstall Windows.

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