# Why does it prompt "Could not reach server (timeout)" during syncing?

![image](https://docs-static.d5render.com/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces/-MjbN1iGmN_HBnj_fyU9/uploads/kcoV1BehYlm3ac7O3EA2/image.png)

This error is usually caused by **port** conflicts. 

Suggestion: Please restart the device and connect with D5 again.