Troubleshooting

The app launches but the window stays blank

The Python backend probably failed to spawn. Open %APPDATA%\\FrenzBrowser\\logs\\ and grep the most recent log for "backend.bound" — if you don't see it, the backend exited early. Email the log line to support.

Profile launches but the browser shows "ERR_TUNNEL_CONNECTION_FAILED"

Your proxy isn't reachable or rejected the auth. In the Proxies tab, click the Test button for the assigned proxy. If it fails, the proxy is down and you need a working one assigned.

WebRTC test shows my real IP

Real Chrome occasionally bypasses our ICE-candidate filter on slow machines. Hard refresh the test page; if it still leaks, switch to headless mode for that profile (Settings → Performance), which is more strict about WebRTC.

"Forgot master password"

There is no recovery. The vault is encrypted with a key derived from your master password — by design, we cannot decrypt it. If you've lost it, you'll need to delete %APPDATA%\\FrenzBrowser\\ and re-import any backups (which are encrypted with the same password).

I keep seeing the SmartScreen warning even after Run anyway

SmartScreen evaluates each new installer version separately. After 100+ downloads of a given version it stops warning. Auto-updates that ship under the same publisher reputation usually don't trigger the prompt.

Where's the diagnostic bundle?

Settings → Advanced → Export diagnostic bundle. Produces a .zip with your last 14 days of logs (with secrets redacted). Attach it to a support email if Arthur asks for it.