4 Ways to Fix the Ubisoft Connect NSIS Error on Windows PCs

Many players install Ubisoft Connect to play Assassin’s Creed games. However, some players report that an NSIS error occurs when they try to install Ubisoft Connect on PCs. The message for that error says, “NSIS Error… Installer integrity check has failed.” Consequently, players can’t install and play games that require the Ubisoft Connect launcher. This is how you can fix the Ubisoft Connect NSIS error on Windows PCs.

Run the Ubisoft Connect Installer From the Command Prompt

Many players confirm they’ve fixed the Ubisoft Connect NSIS error by running the UC installer via the Command Prompt. Then, you can skip the integrity check by adding a /ncrc command-line parameter. So, try running the Ubisoft Connect installer from the Command Prompt as follows:

1. Download the Ubisoft Connect installer from this website page.
   
   

   The Ubisoft Connect download page

2. Next, click in the Search box to enter a cmd keyword there.
3. Right-click Command Prompt and select the Run as administrator option for opening that app with elevated privileges.
4. Open the folder that includes your downloaded Ubisoft Connect installer file.
5. Right-click the Ubisoft Connect file and select Copy.
6. Press Ctrl + V to paste the copied Ubisoft Connect file path into the Command Prompt.
7. Then, add a /NCRC to the end of the command, with a space separating it. For example, the command should look something like this with your alternative directory path: C:\Users\[user folder]\Downloads\UbisoftConnectInstaller.exe /NCRC.
   
   

   The /NCRC command

8. Press the Enter button to execute the command.

Try Installing Ubisoft Connect from the Microsoft Store

Note that Ubisoft Connect is also available on Microsoft Software. Downloading that app from the Microsoft Store is a viable potential solution for the Ubisoft Connect NSIS error because you won’t need to run an installer file. You can try installing Ubisoft Connect via the MS Store like this:

1. Open the Start menu and click on the Microsoft Store shortcut there.
2. Type Ubisoft Connect into the search box for the MS Store app.
3. Click on Ubisoft Connect in the search results.
4. Press the Install button for Ubisoft Connect.

The Ubisoft Connect app on the MS Store

Download an Older Version of Ubisoft Connect

Older versions of the Ubisoft Connect installer can sometimes be more reliable than the latest ones. So, downloading an older installer file for Ubisoft Connect might be worth a try. This is how you can download an older version of Ubisoft Connect.

1. Open this Uptodown page in your browser.
2. Click on the download option for the second-latest Ubisoft Connect installer.
   
   

   The Uptodown download page

3. Open the folder that includes the recently downloaded Ubisoft Connect installer file.
4. Double-click the downloaded Ubisoft Connect file to open the setup wizard.

Check for Potential Drive Errors

If the Ubisoft Connect NSIS error persists, there might be drive errors causing installation issues on your PC. You can check for drive errors by utilizing a built-in Windows tool like this:

1. Open a File Explorer window.
2. Right-click the drive icon to select Properties.
3. Click the Tools tab.
   
   

   The Tools tab

4. Select the Check option.

Those potential resolutions above will usually fix the Ubisoft Connect NSIS error for most players. With that error resolved, the Ubisoft Connect setup wizard will guide you to install the software. Then, you can install and play the Ubisoft games you’re interested in.