---
title: E30005 Device_Connection_Failure（已废弃）
description: "Failed to connect the device."
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/atlaserrorcode_15_0129.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/atlaserrorcode_15_0129.html
indexId: ca047a3da806e2ef48a2d153b0db32ab481ad7f39beb336a8186b4ebad18b38d84
---
# E30005 Device_Connection_Failure（已废弃）

#### Symptom

Failed to connect the device.


#### Possible Cause

1. Heartbeats are missing on the device.
2. The underlying channel is disconnected.


#### Solution

1. Obtain the device log and contact technical support at https://www.hiascend.com/support.
2. Restart the device.