VPN will not connect

Read the message

1. Confirm that the internet works without NetScope.
2. Check whether Android VPN consent was accepted. Cancelling it prevents interface creation.
3. Wait for rules preparation. A rules error needs investigation; repeated taps do not prove readiness.
4. Check for another VPN in the same profile. See VPN conflicts.

If this is Preview

An empty participant list and single-app inspection mode are incompatible with the experimental per-app configuration. These are explicit startup rejections, not a reason to silently change settings or select Direct. Check the build type and the routing-screen message; stop and retain the error description if the test scenario has not been agreed.

If it keeps failing

Record the version, build type, Android, network and error text. Do not uninstall or clear app data merely to diagnose it: that loses history and settings without establishing the cause.

First launch · Diagnostics.