Windows 10 Error 1500

Vikas Medhekar Windows

Error 1500 (aka installation error) occurs when you install two files at the same time. This error shows itself like this:

Error 1500: Another installation is in progress. You must complete that installation before continuing this one.

Beware: This error is frequent whenever you’ve to install multiple files. But we’ve found some ways. Read on.

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Exit Another Installation

First of all, exit all installations in progress. Restart your PC. And now install one program at a time. Why? Well, because your setup uses shared DLL files. When your Windows 10 fails to process the required components or retrieve the data stored in your shared files, error 1500 comes up. Now, what’s the deal? How to get rid of this error?

 

Clean Boot

Perform selective startup from the General tab of MSCONFIG tool (Use Run > MSCONFIG). Load only services. No third party startups.

Write this subkey using RegEdit command in Run dialog:

  • HKEY_LOCAL_MACHINE | SOFTWARE | Microsoft | Windows | Installer | InProgress

Clear the value of the Default string. Now delete whatever setup file path in it.

Exit and restart your PC.

 

Now Restart Windows Installer

Stop here. Restart your Windows Installer service from Services.msc tool using Run dialog. Scroll down. Open the Service Properties dialog to terminate and re-execute Windows Installer service, an essential component for installation of various programs.

 

Change Service Startup Type

Set your Windows Installation automatic. Restart your PC now.

 

Re-register the MSI

First, unregister and reregister your Microsoft Windows Installer files and components. How? Use these commands in a Command Prompt.

  • Msiexec /unreg
  • Msiexec /regserver

Reboot. Try installing the program again.

 

Here you Go! Reload MISEXEC.EXE

You can find this process in the Processes tab of the Task Manager. Choose to end the process from right-click options. And now reload it by typing msiexec.exe in the Run dialog box.