Overview
Minima on Windows uses OpenWebStart to run. OpenWebStart is a free tool that lets your PC run Java applications like Minima. This guide will walk you through installing everything you need.
What You'll Need
- Windows 10 or Windows 11
- About 500MB of free disk space
- Internet connection for download and initial sync
Step 1: Download OpenWebStart
OpenWebStart is a free application that allows your PC to run Java programs like Minima.
- Open your web browser and go to openwebstart.com
- Click the big Download button
- Save the file to your Downloads folder
Step 2: Install OpenWebStart
- Open your Downloads folder
- Find the file starting with OWS-Setup
- Double-click it to run the installer
- If Windows shows a warning, click Run anyway
- The installer will open - click Next
- Accept the license agreement and click Next
- Click Install
- Wait for installation to complete, then click Finish
Windows SmartScreen may show a warning about OpenWebStart. This happens because OpenWebStart is not a well-known app. Click More info then Run anyway. OpenWebStart is safe and legitimate.
Step 3: Download Minima JNLP from SpartacusRex.com
The Minima application is downloaded as a JNLP file from SpartacusRex.com. This file tells OpenWebStart what to download.
Right-click and "Save Link As..." to save the file
- Right-click the button above
- Select "Save Link As..." or "Download Linked File As..."
- Save the file as
minima.jnlpto your Downloads folder
Step 4: Launch Minima
Now let's start Minima for the first time:
- Open your Downloads folder
- Find the minima.jnlp file
- Right-click it and select Open with
- Choose OpenWebStart
- If OpenWebStart isn't in the list, click Choose another app and browse for OpenWebStart (usually in C:\Program Files\OpenWebStart)
- OpenWebStart will download and install Minima
- This may take a few minutes - be patient!
Step 5: Your Wallet
The Minima node IS your wallet. There's a built-in Wallet MiniDapp for managing your tokens.
- Look for the Wallet MiniDapp in your MiniDapp Hub
- Open it to see your addresses and balance
- Your 24-word recovery phrase is stored securely - back it up if you haven't already
Step 6: Connect to Network
On first run, Minima connects to the network - this takes about 10 seconds.
- When prompted, click to connect to the network
- Wait a few seconds for the connection
- You're ready to go!
Step 7: Create a Shortcut
Let's create a shortcut so you can easily start Minima in the future:
- Right-click the minima.jnlp file in your Downloads
- Select Create shortcut
- Move the shortcut to your Desktop for easy access
Now to start Minima, just double-click the shortcut on your Desktop!
Updating Minima
When a new version of Minima is released:
- Close Minima completely
- Double-click minima.jnlp again (or your shortcut)
- OpenWebStart will download and install the new version
- Your wallet and history are preserved
Troubleshooting
OpenWebStart doesn't open JNLP files
- Right-click minima.jnlp → Open with → Choose OpenWebStart
- Make sure "Always use this app" is checked
- If OpenWebStart isn't listed, browse to C:\Program Files\OpenWebStart\
SmartScreen blocks the installer
- Click More info
- Click Run anyway
- OpenWebStart is safe - it's an open source project
Sync is stuck
- Check your internet connection
- Close Minima and restart it
- Make sure Windows isn't in sleep mode during sync
- Check that Windows Firewall isn't blocking Minima
Minima won't start
- Make sure OpenWebStart is properly installed
- Try right-clicking minima.jnlp and choosing "Run as administrator"
Need help?
- Join the Minima Discord
- Visit docs.minima.global
Next Steps
Now that you have Minima installed: