How to fix 'querySrv EREFUSED _mongodb._tcp.crf1-o7dqz.gcp.mongodb.net' MondoDB Atlas error connection?

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The error querySrv EREFUSED _mongodb._tcp.crf1-o7dqz.gcp.mongodb.net typically occurs when there is a problem establishing a connection to the MongoDB Atlas server. Here are a few steps you can take to troubleshoot and potentially fix this issue:

  1. Check your network connectivity: Ensure that your machine has a stable internet connection and can access the internet without any restrictions. If you are behind a firewall or proxy server, make sure that the necessary network ports are open for connecting to MongoDB Atlas.

  2. Verify your connection string: Double-check your MongoDB Atlas connection string for any errors or typos. Ensure that it contains the correct hostname (crf1-o7dqz.gcp.mongodb.net in this case) and that it is correctly formatted.

  3. Verify your credentials: Make sure that you are using the correct username and password in your connection string. Ensure that the credentials have the necessary privileges to access the MongoDB Atlas cluster.

  4. Check your firewall settings: Ensure that your firewall settings allow outbound connections to MongoDB Atlas. If you are running a local firewall or antivirus software, temporarily disable it to see if it is causing the issue.

  5. Contact MongoDB support: If none of the above steps resolve the issue, reach out to MongoDB support for further assistance. They can provide specific guidance and troubleshooting steps based on your environment and configuration.

It's worth noting that the specific cause of this error can vary based on your network setup, firewall configuration, or other factors. Therefore, it's important to carefully review your network and connection settings, and if necessary, consult the MongoDB documentation or seek support from their team.