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

<figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FkcoV1BehYlm3ac7O3EA2%2Fimage.png?alt=media&amp;token=1c024fb5-809d-412f-adc6-1f3cde2be47c" alt=""><figcaption></figcaption></figure>

This error is usually caused by **port** conflicts. <br>

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