Server selection timed out while connecting to sandbox cluster on compass

I am facing the following error while connecting to the sandbox cluster


the user has been given read write to any db permission as per course (also tried giving atlas admin permission to troubleshoot the issue)


  • username: m001-student
  • password: m001-mongodb-basics

Hi @Prenav,

I am able to connect to your sandbox cluster. I believe it must be a network/firewall related issue at your end.

Can you please make sure you are able to ping the cluster by running the following command in your terminal ?


And also please verify that port 27017 is not blocked by clicking

On some occasions, even though the above mentioned tests passes, network is still a problem. So please make sure you are not connected to any VPN and firewall/antivirus is disabled. You can also try to connect from some other network such as your home network .

Hope it helps!

If the issue still persists please feel free to get back to us. Happy Learning :slight_smile:

Shubham Ranjan
Curriculum Support Engineer

Hi @Shubham_Ranjan,
I am able to ping the cluster and the port is open, I had tested the same before.

Please note that I did face an issue with mongo shell connection on the course cluster, where I had to move to a US VM to access the cluster; the same cluster was accessible via compass.

I am currently not connected to any VPN, but will try using the VM to connect to compass to see if that resolves.