diff --git a/Internet-Streaming-Errors.md b/Internet-Streaming-Errors.md
index 289b326..6445eed 100644
--- a/Internet-Streaming-Errors.md
+++ b/Internet-Streaming-Errors.md
@@ -17,4 +17,11 @@ This error usually means your router doesn't have UPnP enabled. Some routers hav
 
 This error may also be caused by a firewall product on your host PC blocking the Internet Streaming Helper from talking to your router. Try disabling your PC's firewall temporarily to see if that's the cause.
 
-If you can't fix this error, you can try using the [ZeroTier setup steps](https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#zerotier) instead or you can [forward the ports manually](https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#manual-port-forwarding-advanced).
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+If you can't fix this error, you can try using the [ZeroTier setup steps](https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#zerotier) instead or you can [forward the ports manually](https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#manual-port-forwarding-advanced).
+
+# Manual Internet streaming test fails
+If the testing tool thinks everything is working but can't confirm it due to your network setup, it will ask you to perform the test yourself. It is important to _not be connected to the same network as your PC_ when testing this. You should disconnect from your WiFi network and connect with another network like cellular data or mobile tethering.
+
+If you already paired with your PC on your WiFi network, your PC should just appear online after connecting to a different network if it's working properly. Otherwise, you should type the IP address it gives you into Moonlight's Add PC dialog.
+
+If you can't get it working, you can try using the [ZeroTier setup steps](https://github.com/moonlight-stream/moonlight-docs/wiki/Setup-Guide#zerotier) instead.
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