Question 1

Edge blocked the download?

Accepted Answer

Edge says the file "isn't commonly downloaded". Click the ··· menu next to the file and choose "Keep".

Question 2

Chrome blocked the download?

Accepted Answer

Chrome says the file "isn't commonly downloaded". Click "Keep" in the download bar at the bottom.

Question 3

Windows says "Windows protected your PC" — what do I do?

Accepted Answer

This is Windows SmartScreen's default prompt for new apps. Click "More info", then "Run anyway". The 开途 Kaitu app is EV code-signed, so you won't see this prompt again after installing.

Question 4

macOS says it "can't verify the developer" — what do I do?

Accepted Answer

After the first install, open System Settings → Privacy & Security, find the message about 开途 Kaitu at the bottom and click "Open Anyway". You won't be asked again on later launches. To enable the system extension (VPN mode), the system will guide you to allow it under Privacy & Security → General.

Question 5

My Android phone blocks the install and I can't figure out how to install it — what now?

Accepted Answer

Open the 开途 Kaitu app on your computer, go to "Account → Install on other devices → Install on Android phone", connect your phone with a USB cable and follow the wizard — it installs onto the phone automatically.

Question 6

Is the 开途 Kaitu app safe?

Accepted Answer

The 开途 Kaitu app is Apple-notarized and Windows EV code-signed. All installers are distributed over HTTPS with verifiable SHA-256 checksums. The core of the k2 protocol is covered by our independent security review program.

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