How to Fix Samsung DeX Errors on Galaxy Phones and Tablets

Resolve Samsung DeX errors on Galaxy devices with step-by-step troubleshooting for wired/wireless connections, PC compatibility, and error reporting.

If you're experiencing errors while using Samsung DeX on your Galaxy phone or tablet, follow these steps to troubleshoot connectivity issues, collect logs, and ensure optimal performance across wired and wireless setups.

1. What to Do When Samsung DeX Shows an Error

Samsung DeX errors can occur due to software conflicts, connection issues, or hardware limitations. To help improve the service, Samsung collects error reports containing log data, which may include personal information. Sharing screenshots of the error can also assist in resolving the issue.

2. How to Send Log Data for Samsung DeX Errors

Log data helps Samsung identify and fix DeX-related issues. Follow these steps to send log data from your device:

1. Send PC Log Data: Connect your phone to a PC and reproduce the issue while running the Samsung DeX app.
2. Automatically Collect Log Data: Enable automatic log collection when prompted by a DeX error notification on your phone.
3. Send Phone Log Data: If no notification appears, manually collect and send logs after reproducing the issue.

3. Why Samsung DeX Won't Connect to My PC

If your phone and PC fail to connect via Samsung DeX, check the following:

- Ensure both devices are compatible with Samsung DeX. Most Galaxy S, Galaxy Z, and Galaxy A series devices support DeX functionality.

- Verify that the Samsung DeX app is updated to the latest version on both devices.

- Restart both your phone and PC to resolve temporary connectivity issues.

4. How to Fix Samsung DeX Display Issues on Monitors and TVs

If the Samsung DeX screen doesn't appear on your connected monitor or TV, try these solutions:

- Check the HDMI or USB-C cable connection and ensure the monitor/TV is set to the correct input source.

- Enable "Auto start when HDMI is connected" in your device's settings under Advanced features > Samsung DeX.

5. How to Troubleshoot Samsung DeX Wireless Connection to a TV

If the Samsung DeX Home screen doesn't appear on your TV, follow these steps:

1. Ensure both your phone and TV are connected to the same Wi-Fi network.
2. Restart the Samsung DeX app and reconnect to the TV.
3. Check for firmware updates on your TV and phone.

6. How to Fix Samsung DeX Wired Connection to a PC

For PCs running Windows, ensure the ss_conn_service2 service is running in the Task Manager > Services list. If it's stopped, restart it manually.

- On PCs with Qualcomm's Snapdragon platform (Windows on ARM), use a USB hub instead of a direct USB connection for better compatibility.

7. How to Troubleshoot Samsung DeX Wireless Connection to a PC

If "DeX on TV or monitor" appears instead of the PC option, click the more options icon at the top right of the window and select Switch to PC.

8. Supported Samsung Galaxy Devices for Samsung DeX

Samsung DeX is supported on most Galaxy S series (S24, S25, S26), Galaxy Z Fold, Galaxy Z Flip, and select Galaxy A series devices. Check your device's specifications for confirmation.

Related Samsung Support Topics

- How to update Samsung DeX on your Galaxy device

- How to optimize Samsung DeX performance on Windows PCs

- How to connect Samsung Galaxy devices to external displays