4 Ways to Fix for NSIS ‘Error Launching Installer’ in Windows

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Basic Fixes

Fix 1: Locate Problematic App Using Task Manager and Uninstall It

This problem may be caused by a third-party app trying to update. To fix it, locate it in the Task Manager and uninstall it.

Step 1:PressCtrl+Shift+Escto open the Task Manager.

Step 2:In the search bar, typeNSIS,NSIS installer, orNSIS (Nullsoft Scriptable Install System).

Step 3:Right-click an option with NSIS and clickOpen file location. You should see the problematic app.

Step 4:PressWindows+R, typeappwiz.cpl, and hitEnter.

Step 5:Click the problematic app,Uninstall, and follow the wizard to complete the process.

Fix 2: Clean Boot the Computer

Clean boot allows you to manage the services that start when your PC boots up. So, it is a handy tool for discovering the culprit services causing problems like the NSIS error on your Windows PC. Here’s how to perform a clean boot:

Step 1:Press theWindowskey to open the Start menu. Typemsconfigin the search box and pressEnterto open the System Configuration utility.

Step 2:Switch to theServicestab.

Step 3:Check the box forHide all Microsoft services. Then, click theDisable allbutton.

Step 4:Click onApplyand thenOK.

Step 5:Click on theRestartbutton.

Step 6:Wait for the PC to restart and relaunch the installer file. Check if the NSIS ‘Error Launching Installer’ message appears.

Reopen the System Configuration utility and enable some third-party services. Restart your PC and repeat this process till you identify the meddlesome program on your PC.

Fix 3: Perform a System Restore

System Restore is a handy tool that can help you revert to the last known good configuration on your Windows PC. If you face the NSIS error after installing or updating an app, pick an old restore point when your PC worked fine and apply it. Here’s how:

Step 1:Press theWindowskey to open the Start menu. Typerstruiin the search box and pressEnterto open System Restore.

Step 2:Click on theNextbutton.

Step 3:Select a suitable restore point from the list and click theNextbutton.

Follow the on-screen instructions to continue with the System Restore process. Your PC will restart and apply the selected restore point on your PC.

Fix 4: Re-Register the Windows Installer Service

If restarting the Windows Installer service has no effect, you must re-register the service using Command Prompt. Here’s how to do it:

Step 1:Press theWindowskey to open the Start menu. Typecmdin the search bar and press theCtrl+Shift+Enterkeyboard shortcut.

Step 2:The User Account Control window will launch. Click onYesto open Command Prompt with administrator privileges.

Step 3:Type the following commands and hitEnterafter each one:

Step 4:You won’t see any message after executing the commands. Close the Command Prompt window.

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Last updated on 28 May, 2024

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