What to do if the local network connection between this device and the receiver is abnormal?

If you encounter a LAN connection issue between this device and the receiving device, follow the steps below to troubleshoot:

1. Different network sources (most common)

Issue: The computer is connected to the modem, while the mobile device is connected to the router Wi-Fi.

Solution: Connect the computer to the same router network as the mobile device.

2. Router isolation enabled

Symptoms: The phone and computer are connected to the same Wi-Fi but cannot communicate.

Solution:

1. Log in to the router admin page:
   192.168.1.1 or 192.168.0.1 (check the label on the router)

2. Disable isolation:
   Go to Wireless Settings or Security Settings → find AP Isolation / Client Isolation → disable it → restart the router

Note: Menu paths may vary by router brand.

3. Firewall blocking the connection

Symptoms: The phone can ping the computer’s IP, but cannot connect to the app.

Solution (Windows):

1. Press Win + R → enter control → open Control Panel

2. Go to System and Security → Windows Defender Firewall

3. Click Allow an app through firewall

4. Locate this app → check both Private and Public

5. Save changes and restart the app

4. VPN or virtual machine interference

Symptoms: Multiple IP addresses appear, or the IP is abnormal.

Solution:

1. Disconnect all VPNs

2. Exit all virtual machine software (e.g., VMware, VirtualBox)

3. Check IP address:

   • Press Win + R → enter cmd → run ipconfig

   • Confirm a valid LAN IP (e.g., 192.168.x.x)

5. Multiple network adapters causing IP conflicts

Symptoms: The computer is connected via both Ethernet and Wi-Fi, or has virtual adapters.

Solution:

1. Prefer Wi-Fi → unplug Ethernet cable

2. Disable unused adapters:

   • Press Win + R → enter ncpa.cpl

   • Right-click and disable unused adapters (e.g., Ethernet, VMware)

   • Keep only the active network connection

Final troubleshooting steps

If the issue persists, perform the following:

1. Restart all devices

• Restart phone, computer, and router (power off for 30 seconds)

2. Verify IP addresses

• On computer:
  Win + R → cmd → run ipconfig | findstr "IPv4"
  Record the IP (e.g., 192.168.1.100)

• On phone:
  Check IP in Wi-Fi settings
  Ensure both devices are on the same subnet (e.g., 192.168.1.x)

3. Test connectivity

• Install PingTools on the phone

• Enter the computer IP to test connectivity

If all steps fail, the issue may be related to network environment restrictions or device-specific configurations.