Why Lightsail Service Can't Access with RDP ?

There could be several reasons why you may be experiencing difficulty connecting to your Lightsail instance using RDP (Remote Desktop Protocol). Here are a few possible causes and troubleshooting steps to consider:

1. Security Group Settings: Check the security group associated with your Lightsail instance. Make sure that it allows incoming RDP traffic on the appropriate port (3389 by default). You can review and modify the security group settings in the Lightsail console under the "Networking" tab.

2. Instance Status: Confirm that your Lightsail instance is in a running state, on the Lightsail console you should see a list of your instances. Each instance is displayed with its name, region and current status. If the instance is stopped or in a pending state, you won't be able to establish an RDP connection. Start the instance if it's stopped, and wait for it to finish launching if it's still pending.

3. Correct Credentials: Ensure that you're using the correct username and password for the instance. Lightsail instances use different default usernames depending on the operating system (e.g., "Administrator" for Windows based instances, "ec2-user" for Amazon Linux instances).

Here’s how you can find your credentials for a Windows based instance:

1. Open the Lightsail console: https://lightsail.aws.amazon.com/

2. Select the Lightsail instance you want to connect to.

3. Select the Connect tab. In the Use a Remote Desktop client section, note the username, and password you will use to connect.

4. RDP Client Configuration: Check your RDP client settings to ensure they're correctly configured. Ensure that you're specifying the correct instance IP address or DNS name, along with the appropriate port (3389 by default). Also, double-check that your client's firewall isn't blocking outbound RDP traffic.

If you can access the Lightsail service in one browser but encounter issues with another browser, the problem is likely related to the browser settings or extensions. Here are some steps you can take to troubleshoot the issue:

• Clear the browser’s cache and cookies: sometimes, cached data and cookies can cause connectivity problems. Try clearing the cache and cookies
• Disable extensions: browser extensions can interfere with certain web pages. Temporarily disable all extensions in your browser and try accessing the Lightsail service again. If the issue is resolved after disabling extensions, enable them one by one to identify the problematic extension.
• Check the browser’s firewall settings: the browser might have specific firewall settings that are causing issues. Ensure that the browser is allowed through your system's firewall or antivirus software.
• Update the browser: make sure you are using the latest version of the browser. Outdates browsers may have compatibility issues with certain websites or services.
• Test on a different device: if possible, try accessing the Lightsail service from a different computer or device. This will help determine if the issue is specific to your device or if it's related to the browser you are using.

For more information please see the following resources:

Connecting to your Windows instance: https://lightsail.aws.amazon.com/ls/docs/en_us/articles/connect-to-your-windows-based-instance-using-amazon-lightsail

Troubleshooting connection issues: https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-troubleshooting-browser-based-ssh-rdp-client-connection

I can access the Lightsail service with Mozilla Firefox. But not with Chrome. Still stuck on "Connect to instance"