Many times, the downloaded setup file for an app or a program is damaged, incomplete, or it may not meet the system requirements, and it shows an error message, “NSIS error – Error launching installer“.
The error means that the installer failed the self-check due to some changes been done from what it was originally. However, if the installation still goes on, the final installed software will be damaged. Therefore, it shows the error to stop the installation process to continue.
However, this error can be fixed. Let’s see how.
Method 1: Shifting the setup file to another folder
Just copy the setup file and shift it to any other location in any another folder. Now, try to run the setup file, it will run smoothly. The reason behind this is that sometimes the path contains some non english characters and it throws the error.
Step 1: Go to the location where the setup file is located (for which you are seeing the error).
For instance, here we tried to open the VLC Media Player setup file, but the error was showing up. So, we navigated to the original location of its setup file/installer in the File Explorer, in the Downloads folder to change the location of the installer.
Step 3: Now, right-click on the installer, select Copy.
Step 4: Next, paste the copied installer to a new location. We created a New Folder on desktop, named it Media Player, and moved the VLC installer to this new folder.
*Note – Do not use any non-English characters in the Folder name, or the installer may not work properly. For instance, avoid adding characters like #, @, Л, Д, Ж, Й, Г, and so on. Check the example below:
Step 5: The correct folder path for the installer will look like this:
Run the installer now from this new folder and it should work now. If not, try the 2nd method.
Method 2 – Find the Program responsible for this error
First leave the NSIS installer error message open. Do not close it.
1. Now, Press CTRL + SHIFT + ESC keys together to open Task manager.
2. Now, Locate the NSIS error.
3. Right click and Click on Go to details. This will let you identify the culprit program responsible for this.
4. If Going to process does not help, right click and click on open file location
Normally many user found programs like dropbox updater was the reason behind it. In your case it may be different. Get rid of that.
Method 3: How To Fix the NSIS error “Error launching installer” in Windows 10 Using Command Prompt
Step 1: Search cmd in windows 10 search box. Right click and run as admin.
Step 2: Execute the below-mentioned path in the Command Prompt in the format as shown:
"Your software folder location\your software name.exe"
For instance, our command looks like this:
There is a shortcut to do the method also,
Just drag the setup file to Command prompt window.
Now, hit Enter and the installation procedure will start. This should install your software properly.