Fix NSIS Error Ubisoft on Windows 10, Windows 11, Steam Deck, and Xbox. Troubleshoot Ubisoft game installer failed issues with easy, effective step-by-step fixes.
Installing Ubisoft games or the Ubisoft Connect client is usually straightforward, but many users encounter the frustrating NSIS error during installation. This error, often phrased as “NSIS error: installer integrity check has failed”, stops the process cold, leaving you stuck and unable to enjoy your game.
Whether you are on Windows 10, Windows 11, or even using platforms like Steam Deck or Xbox, this detailed guide will help you understand the causes, troubleshoot effectively, and fix the NSIS error on Ubisoft installers.
Understanding NSIS Error in Ubisoft Installations: What Does It Mean?
What is NSIS and Why Does This Error Occur?
NSIS, or Nullsoft Scriptable Install System, is a widely used technology for building Windows installers. Ubisoft uses NSIS-based installers to deliver their game and software packages.
The NSIS installer performs an integrity check or self-check to verify that the installation file has not been tampered with or corrupted during download or transfer. This is crucial because corrupted or incomplete installers can cause partial or broken installations, which may lead to software malfunction or security risks.
When the NSIS installer detects an issue during this self-check, it triggers the NSIS error to prevent proceeding with a faulty installation.
What Are the Symptoms of NSIS Error?
- The installer fails to launch or abruptly closes.
- An error message pops up saying: “The installer integrity check has failed. The installer may be corrupted. Please re-download the installer.”
- Installation does not start, or fails midway.
- You may see this error repeatedly even after multiple installation attempts.
Understanding this error means understanding that the system is protecting your computer from potentially damaged software, but it also means you have to take some extra steps to get the installer working correctly.
Why Do I Keep Getting NSIS Error When Installing Ubisoft Games?
Multiple factors can cause the NSIS error specifically in Ubisoft installers. Here’s a detailed look at the common causes:
1. Corrupted or Incomplete Ubisoft Installer Files
The most frequent cause is corrupted or incomplete downloads. Network interruptions, unstable internet connections, or server-side glitches may cause the .exe installer to download partially or with errors.
Even a small missing byte in the installer file can cause the integrity check to fail.
2. Antivirus or Firewall Interference
Modern antivirus programs can sometimes flag Ubisoft installer files as suspicious, quarantining or blocking parts of the installer.
If antivirus scanning happens during the installation process, it may interrupt or alter the files mid-installation, leading to NSIS errors.
3. Complex Installer File Names or Locations
Using long file names, including spaces or special characters in the installer’s filename, or running installers from external drives or network locations can cause issues.
The NSIS installer sometimes fails to process paths with complex characters or slow media.
4. Hard Disk or File System Errors
Damaged sectors, corrupt file tables, or file system inconsistencies on your hard drive can corrupt installer files after download or during transfer.
If your disk has errors, it may not properly read or write the installer files, triggering errors.
5. Windows OS Compatibility Issues or Pending Updates
Certain Windows versions or pending system updates can conflict with the installer’s operation.
Especially on Windows 11, some users have reported compatibility problems with Ubisoft Connect installers.
Detailed Step-by-Step Fixes for NSIS Error on Ubisoft Game Installer
Below is a comprehensive list of methods to fix the NSIS error on Ubisoft installations. Follow them in sequence for best results.
Step 1: Clear Your Browser Cache and Download Ubisoft Installer Freshly
When you download an installer, your browser stores temporary files (cache). If the cache is corrupted, it may serve a damaged installer file.
How to Clear Browser Cache:
- Google Chrome: Settings > Privacy and Security > Clear Browsing Data > Cached images and files > Clear Data.
- Firefox: Options > Privacy & Security > Cookies and Site Data > Clear Data.
- Microsoft Edge: Settings > Privacy, Search, and Services > Clear Browsing Data.
After clearing, download the installer again from the official Ubisoft website to ensure you have the latest and uncorrupted file.
Step 2: Rename Installer File to a Simple Name Without Spaces or Special Characters
Long filenames or special characters can cause issues when the installer parses the file path.
Example:
Rename your installer to:
install.exe
Avoid underscores, spaces, or non-alphanumeric characters in the filename.
How to rename:
- Right-click the installer file.
- Select Rename.
- Enter the new name and press Enter.
Step 3: Download Installer Using Another Computer or Network
Sometimes, the internet connection or PC environment causes corrupted downloads.
If possible, use a different computer with a reliable internet connection to download the Ubisoft installer, then transfer the file via USB flash drive.
This method ensures the installer is not corrupted during download or transfer.
Step 4: Scan and Repair Hard Disk Errors Using CHKDSK
If your hard disk has issues, files can become corrupted during read/write operations.
To check and fix disk errors:
- Open Command Prompt as Administrator (search for
cmd, right-click, Run as Administrator). - Run this command:
chkdsk C: /f /r
C:is your system drive. Change it if your installer is on a different drive./ffixes disk errors./rlocates bad sectors and recovers readable information.
You may be prompted to schedule a scan on the next reboot. Accept and restart your computer.
Step 5: Run System File Checker (SFC) to Repair Corrupted System Files
Damaged Windows system files can interfere with installation processes.
To run SFC:
- Open Command Prompt as Administrator.
- Type:
sfc /scannow
This command scans and repairs corrupted system files. Let it complete fully.
Step 6: Temporarily Disable Antivirus and Firewall
Antivirus or firewall software might block parts of the installer.
Disable Antivirus:
- Right-click antivirus icon in system tray.
- Select Disable or Pause Protection temporarily.
Disable Windows Defender Firewall:
- Go to Control Panel > System and Security > Windows Defender Firewall > Turn Windows Defender Firewall on or off.
- Select Turn off for private and public networks temporarily.
Important: Remember to enable your antivirus and firewall after installation to stay protected.
Step 7: Use Command Prompt to Bypass Installer Integrity Check with /NCRC
If you’re confident your installer is safe but Windows still throws NSIS errors, bypass the check with the /NCRC switch.
How to do this:
- Copy the installer to your desktop or a simple folder (e.g.,
C:\Installers). - Open Command Prompt.
- Navigate to the installer folder:
cd C:\Installers
- Run the installer with the bypass command:
install.exe /NCRC
This forces the installer to run, ignoring corruption warnings.
Caution: Only do this if you are sure the installer file is safe and from an official source.
Step 8: Windows 11 Users – Use the Older Ubisoft Connect Version from Microsoft Store
Windows 11 has unique compatibility challenges with some installers.
A practical workaround is to download an older, stable version of Ubisoft Connect from the Microsoft Store:
- Open Microsoft Store.
- Search for Ubisoft Connect.
- Choose an older version or stable release instead of beta or preview versions.
This often resolves NSIS-related installation errors specific to Windows 11.
Fixing NSIS Error for Ubisoft on Other Platforms: Steam Deck and Xbox Insights
NSIS Error on Steam Deck
Since Steam Deck runs on Linux (SteamOS), Ubisoft Windows installers might not function natively.
Tips:
- Use Proton Experimental compatibility mode in Steam.
- Avoid using Windows
.exeinstallers directly. - Verify game files through Steam client.
- Use official Linux-compatible versions where available.
NSIS Error on Xbox Consoles
While Xbox rarely encounters NSIS errors (since games are usually installed via the Store or Game Pass), some users have faced Ubisoft Connect app sync issues.
Fixes:
- Reinstall Ubisoft Connect app from Microsoft Store.
- Clear app cache via Windows Settings > Apps.
- Check for Xbox system updates.
Community Discussions and Reddit Tips for NSIS Error on Ubisoft
Online forums like Reddit offer valuable insights from real users:
- Many recommend the
/NCRCswitch for stubborn installers. - Wired internet connections reduce download corruption.
- Always download installers directly from Ubisoft official pages.
- Antivirus real-time protection is a common culprit; disabling helps.
- Running installers from local drives (not USB or network drives) is crucial.
Frequently Asked Questions (FAQs) on NSIS Error Ubisoft
Q1. What causes NSIS error on Ubisoft game installers?
Answer: Usually incomplete downloads, antivirus interference, corrupted disk sectors, or OS compatibility issues.
Q2. How can I fix NSIS error on Windows 10 and 11?
Answer: Clear cache, rename installer, scan disk with chkdsk, run system file checker, disable antivirus temporarily, and use /NCRC to bypass.
Q3. Does antivirus cause NSIS error with Ubisoft installers?
Answer: Yes, antivirus can block or quarantine installer files, causing integrity check failures.
Q4. What does NSIS mean in Windows 10?
Answer: NSIS is an installer framework used by many applications including Ubisoft to manage installation files securely.
Q5. Why does Ubisoft installer fail repeatedly with NSIS error?
Answer: Persistent network issues, corrupted files, or antivirus blocking are common reasons.
When Should You Contact Ubisoft Support?
If after trying all fixes your Ubisoft installer still fails with NSIS errors:
- Visit Ubisoft Help: https://www.ubisoft.com/help
- Submit a ticket with details: OS version, error screenshots, steps taken.
- Ubisoft technical support can guide or provide alternate installer links.
Final Thoughts: Ensure Smooth Installation and Gaming Experience by Fixing NSIS Error Ubisoft
The NSIS error during Ubisoft game or Ubisoft Connect installation is primarily caused by corrupted files or system interferences.
You can fix the Ubisoft game installer failed due to NSIS error efficiently and get back to gaming without interruptions.
Official Resources
Microsoft Support: How to Run System File Checker (SFC): Official documentation on running the SFC command to repair Windows system files.
Ubisoft Support: The official Ubisoft help portal for troubleshooting installation and game issues. You can submit tickets, browse FAQs, and get direct support.
Ubisoft Connect Download Page: Official site to download the latest Ubisoft Connect client installer safely.
Microsoft Support: Use CHKDSK to Check the Hard Drive: Step-by-step guide to run CHKDSK and fix disk errors on Windows 10/11.
Visit Our Post Page: Blog Page