AWS Lightsail Access

This 403 (unauthorized) error when trying to access AWS Lightsail is a common issue that can occur for several reasons:

1. If your AWS account was recently created, the Lightsail service might not be fully activated yet. In this case, simply wait a few minutes and then refresh your browser to try again.

2. If you're using an IAM user (rather than the root account), that user might not have the necessary permissions to access Lightsail. You'll need to ensure the IAM user has appropriate Lightsail permissions. The IAM user needs a policy that grants access to Lightsail actions and resources, such as:

{
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"lightsail:*"
],
"Resource": "*"
}
]
}

3. In rare cases, especially for AWS accounts created before 2011, AWS Support might need to manually subscribe your account to Lightsail.

If you've waited several minutes, refreshed your browser, and confirmed your IAM permissions are correct but still encounter this error, I recommend contacting AWS Support. They can help identify any account-specific issues that might be preventing access to Lightsail.
Sources
Resolve 403 (unauthorized) errors in the Lightsail console - Amazon Lightsail
Troubleshoot a 403 (unauthorized) error | AWS re:Post
Grant least-privilege permissions with IAM identity policies in Lightsail - Amazon Lightsail

This error appears when the Lightsail service isn't active on your AWS account. Check the following:

1. Your AWS account is fully activated. New AWS accounts can take up to 24 hours to activate. Wait for 10 to 15 minutes, and then try to access Lightsail again.
2. You completed the sign-up process for your AWS account. For more information, see How do I create and activate a new AWS account? Enter all necessary account information, verify your phone number, and then add a valid payment method.
3. Your payment method is valid. Your default payment method must be valid. If necessary, update the default payment method, and then try to access Lightsail again.

If you still can't access Lightsail, contact AWS Support.

Support cases can be opened under the "Account and billing" category when you are experiencing account-related issues.

Reference

What do I do if I get an "It looks like you aren't authorized" error when I try to use Amazon Lightsail?

Hi,

It sounds like you have created your AWS Account recently, and may have signed up for the free account plan.

Free account plans have limited access to certain services.

You need to upgrade to the full access paid account plan to access Lightsail. To learn more about how to upgrade your account plan please refer - https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/free-tier-plans.html

Thanks.