How to fix the NSIS error in Windows 11

by Kazim Ali Alvi
Kazim Ali Alvi
Kazim Ali Alvi
Author
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows. And at times, unscrewing the device to take... read more
Affiliate Disclosure
  • Several users have reported encountering the NSIS error when trying to install programs in Windows 11.
  • This is primarily due to problems with the installer and its files, the presence of malware or virus on the system, or conflict with the language.
  • Also, find out how to prevent the NSIS error and avoid all the trouble fixing it in the future.
NSIS error in Windows 11

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Third-party programs form a critical part of our work or student life. You are required to install various such programs, for instance, editing software, learning apps, data collection, and storage tools, amongst others. But, while doing so, several users encountered the NSIS error in Windows 11.

NSIS (Nullsoft Scriptable Install System) is an open-source tool that facilitates the creation of installers for Windows. When you encounter the error, it basically indicates a problem with the installer or an unfavorable situation preventing it from running.

If the setup continues to run despite the NSIS error, the installed software may be damaged and wouldn’t work as designed. To prevent this, it’s best that you identify the issues causing the problem and eliminate them.

There are a bunch of reasons behind the NSIS error in Windows 11, with each having a specific fix. We have discussed them in the later sections for you to both understand the problem and resolve it.

What causes the NSIS error in Windows 11?

Issues that lead to the NSIS error in Windows, both pertaining to installer setup and the system are listed below:

  • Some files of the program to be installed are missing
  • Downloaded files are modified
  • System infected with malware
  • Corrupt system files
  • Installation media itself is damaged
NSIS error

Now that you have a fair understanding of the error and the underlying causes, let’s walk you through the methods to eliminate it.

How can I fix the NSIS error in Windows 11?

1. Rename the installer setup

  1. Locate the downloaded files for the program, right-click on the installer setup, and select the Rename icon from the context menu. Alternatively, you can select the setup file and hit F2.Rename file to fix NSIS error in Windows 11
  2. Change the name to one word and try to keep it simple. Also, avoid using special characters or non-English alphabets, since they are known to cause problems running the setup.

This is, undoubtedly, the simplest and quickest method to fix the NSIS error in Windows 11. If the setup file name is long or has special characters that the OS fails to recognize, you may encounter trouble running it. Hence, it’s recommended that you use a simple name for it.

2. Move installer setup to another folder

  1. Locate the program installer, right-click on it, and select the Copy icon from the context menu.Copy the setup
  2. Now, go the the desktop, right-click on the empty portion, and select the Paste icon from the context menu.Paste the file

In certain cases, it was the file path that caused the NSIS error in Windows 11. Hence, it’s recommended that you change the location of the file and check if you are now able to install the program.

3. Use a third-party repair software

To resolve the NSIS error in Windows 11, you may need to perform a search for corrupted or damaged Windows files. The best part is that you won’t have to seek a needle in a haystack; all of this and more can be accomplished with an automated solution.

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4. Run a malware scan

  1. Press Windows + S to launch the Search menu. Enter Windows Security in the text field at the top, and click on the relevant search result that appears.Launch Windows Security to fix NSIS error in Windows 11
  2. Next, click on Virus & threat protection from the listed options.Virus & threat protection
  3. Click on Scan options.Scan options
  4. Now, select the Full scan option, and then click on the Scan now button under it.Scan for malware to fix NSIS error in Windows 11

We also recommend you a third-party antivirus like Malwarebytes. Due to its advanced security options, it can detect and remove risky malware immediately. Thus, you ensure your constant protection from different forms of online threats.

5. Update Windows 11

  1. Press Windows + I to launch the Settings app, and select Windows Update from the list of tabs in the navigation pane on the left.Windows Update
  2. Click on Check for updates to scan for any available newer versions of the Windows.Check for updates to fix NSIS error in Windows 11
  3. If any are available, download and install them.

In case you are encountering the 0x80070643, 0x80070422, or 0x800f0831 Windows 11 installation error, click on the relevant linked guide and fix it in no time.

Also, if you are facing trouble launching the Settings app, learn how to eliminate the problem.

6. Change system language

  1. Press Windows + S to launch the Search menu, enter Control Panel in the text field at the top, and click on the relevant search result that appears.Launch Control Panel to fix NSIS error in Windows 11
  2. Click on Clock & Region.Clock & Region
  3. Next, click on Region.Region
  4. Navigate to the Administrative tab from the top, and click on the Change system locale button.Change system locale
  5. Click on the dropdown menu, select an appropriate language which matches with that of the installer, and click on OK to save the changes.Change system language to fix NSIS error in Windows 11

7. Perform a quick SFC scan

  1. Press Windows + S to launch the Search menu. Enter Windows Terminal in the text field at the top, right-click on the relevant search result, and select Run as administrator from the context menu.Launch Elevated Windows Terminal to fix NSIS error in Windows 11
  2. Click Yes on the UAC (User Account Control) prompt that pops up.Click Yes
  3. Click on the downward arrow at the top, and select Command Prompt. Alternatively, you can press Ctrl + Shift + 2 to launch the tab.Launch Command Prompt tab
  4. Now, type/paste the following command and hit Enter to run the SFC scan:sfc /scannowrun SFC scan to fix NSIS error in Windows 11

The SFC (System File Checker) scan identifies any corrupt system files and replaces them with their cached copy stored on the system. So, if it’s the corrupt system files that are preventing the installer from running, performing the scan should fix the NSIS error in Windows 11.

8. Install program via Command Prompt

  1. Press Windows + S to launch the Search menu, enter Windows Terminal in the text field at the top, right-click on the relevant search result, and select Run as administrator from the context menu.Launch Elevated Windows Terminal to fix NSIS error in Windows 11
  2. Click Yes on the UAC (User Account Control) prompt that appears.Click Yes
  3. Click on the downward-facing arrow at the top, and select Command Prompt from the list of options. Alternatively, you can press Ctrl + Shift + 2 to launch the Command Prompt tab.Launch Command Prompt tab
  4. Now, navigate to the folder where the installation setup is saved, right-click on it and select Copy as path from the context menu. Copy setup path to fix NSIS error in Windows 11
  5. Go to Windows Terminal and press Ctrl + V to paste the path.Paste path
  6. Next, hit the Spacebar key to add space, type the following command and hit Enter to run the installer:/NCRCRun installer
  7. Once the setup launches, follow the on-screen instuctions to complete the installation process.

With this method, the installer will bypass any corruption check and run anyway. But, if there’s a major underlying issue, there could be problems with the installed programs. Therefore, we recommend it as the last fix.

How can I prevent the NSIS error in Windows 11?

By now you already know why the NSIS error is encountered and the most effective fixes for it. But, wouldn’t it be much simpler if you could prevent it in the first place?

To do that, make sure you download the program installer setup from the official website, and in case that’s not possible at least a reliable source. This ensures that all the files are downloaded in a single go with no corruption or missing files whatsoever.

These are all the ways you can resolve the NSIS error in Windows 11. Some users also reported encountering the NSIS error launching installer for AMD drivers, so learn how to fix it.

The methods listed above should also solve the NSIS error launching installer when uninstalling a program, in case that’s the issue you are facing.

Tell us which fix worked for you along with your experience of Windows 11 thus far, in the comments section below.

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