Hi,
I would follow the below checks if I face any issue while connecting to the Denodo client from my local machine,
1. Incase of fresh installation, make sure to follow the steps provided in the [**Denodo Platform Installation Guide**](https://community.denodo.com/docs/html/browse/8.0/en/platform/installation/index#denodo-platform-installation-guide).
2. Ensure from the Denodo Platform Control Center, that the servers are up and running.
3. Check if the ports are open and not used anywhere.
4. If the connection between clients and the Virtual DataPort server is established through a firewall, confirm that the connections to the [**ports**](https://community.denodo.com/kb/en/view/document/Ports%20needed%20by%20the%20VDP%20Server) are allowed.
5. Examine the logs present in the **<DENODO_HOME>/logs** folder for more detailed information on the error.
You could refer to the [**Starting Virtual DataPort**](https://community.denodo.com/docs/html/browse/8.0/en/vdp/administration/starting_virtual_dataport/starting_virtual_dataport#starting-virtual-dataport) section of the Virtual DataPort Administration Guide for more information.
You could also read a similar Q&A answer **[here](https://community.denodo.com/answers/question/details?questionId=9060g000000kAICAA2&title=Unable+to+connect+to+Denodo+Express+running+on+AWS+Linux+instance+through+VDP+Admin+tool+on+my+personal+machine.)**.
Hope this helps!
