Troubleshooting Trezor Suite

Quick Fixes

Try these solutions first for most Trezor Suite issues:

• Restart Trezor Suite service (system tray/menu bar)
• Use a different USB cable
• Try another USB port on your computer
• Restart your browser
• Restart your computer
• Update to latest Suite version via download page

Device Not Detected

If your Trezor device isn't recognized:

Check Suite Status

• Verify Suite is running (icon in system tray/menu bar)
• Visit http://127.0.0.1:21325/status in your browser
• Should show "Suite is running"
• If not running, reinstall from download page

USB Connection Issues

• Try original Trezor USB cable
• Avoid USB hubs - connect directly to computer
• Test different USB ports (try USB 2.0 if 3.0 fails)
• Check cable for damage
• Try device on another computer to rule out hardware failure

Platform-Specific Problems

Windows Issues

For Windows troubleshooting, see our Windows guide. Common fixes:

• Check Device Manager for driver errors
• Disable Windows Defender temporarily
• Add firewall exception for Suite
• Run Suite as administrator

Mac Issues

For macOS problems, visit our Mac guide. Check:

• System Preferences → Security & Privacy permissions
• Suite is allowed in Privacy settings
• USB-C adapter quality (if applicable)
• macOS updates installed

Browser Problems

If Suite works but browser won't connect:

• Clear browser cache and cookies
• Disable browser extensions temporarily
• Try incognito/private mode
• Test with different browser
• Check browser console for errors (F12)
• Ensure localhost connections allowed

Connection Timeout Errors

If you see timeout errors:

• Disconnect and reconnect device
• Verify USB cable quality
• Close other apps using USB (virtualization software)
• Check antivirus isn't blocking Suite
• Reduce USB polling interval in Suite settings

Update Issues

Problems updating Trezor Suite:

• Uninstall current version completely
• Download latest installer
• Install fresh copy
• Restart computer after installation
• Verify version in Suite menu

Firewall and Antivirus

Security software can interfere with Suite:

Whitelist Suite

• Add Suite executable to antivirus exceptions
• Allow localhost connections (127.0.0.1:21325)
• Permit outbound connections on Suite ports
• Don't disable antivirus - just add exceptions

Advanced Diagnostics

For persistent issues:

• Check Suite logs (usually in %APPDATA% or ~/Library/Logs)
• Note any error codes or messages
• Test with minimal browser extensions
• Verify no port conflicts on 21325
• Check system event logs for USB errors

Still Having Problems?

If troubleshooting doesn't resolve your issue:

• Visit our help center for support
• Review connection guide for proper setup
• Check setup instructions were followed
• Try the desktop application as alternative