How to update the NinjaTrader Desktop?

To update NinjaTrader Desktop, you must first close the application, then download the latest version from the NinjaTrader Account Dashboard.

Here are the steps:

• Log in to your NinjaTrader Account Dashboard with your username and password.
• Click the "Download" button in the lower left-hand corner of the page.
• Select the version of NinjaTrader Desktop you wish to download.
• Locate the downloaded "NinjaTrader.install.msi" file on your PC, typically in the Downloads folder.
• Double-click the installation file to launch the Installation Wizard.
• Click "Next" to begin the installation.

Updating NinjaTrader Desktop will not affect saved workspaces and third-party add-ons.

source: https://support.ninjatrader.com/s/article/How-Do-I-Download-Latest-Version-NinjaTrader?language=en_US