# Troubleshooting naisdevice

## Browser not opening

> Browser does not open after you click connect.

Restart your default browser.

## Firewall blocks outgoing UDP connections

- Outgoing UDP connections to 51820/UDP must be open in your firewall and or modem provided by your ISP.
- Try using hotspot to eliminate router config problems (remember to disconnect from WiFi on your hotspot device and make sure you use 4G/5G by checking [https://www.ipaddress.my/](https://www.ipaddress.my/))

## Fresh start

- Stop naisdevice
- Remove configuration directory- Mac: `rm -ri ~/Library/Application\ Support/naisdevice/`
  - Linux: `rm -ri ~/.config/naisdevice/`
  - Windows: `rmdir /s "C:\ProgramData\NAV\naisdevice\"`
- Start naisdevice

## Windows virus scanner

> Windows virus scanner blocks naisdevice.exe installer

- Make sure you downloaded from the right source, the signature is valid and the checksum matches the file!
- Try adding an exception: Windows Security / Virus & threat protection / Exclusions.
- Someone reported that running naisdevice.exe from cmd.exe can help.
- Sometimes the installer gets blocked. To unblock it, follow these steps:
  ![Right click the installer and click preferences](/assets/naisdevice-unblock-1.png)
  ![Check the box to remove the block](/assets/naisdevice-unblock-2.png)
  ![Click OK](/assets/naisdevice-unblock-3.png)