AWS PowerShell error Insufficient privileges to perform this action - amazon-web-services

Question

I am new to using AWS PowerShell and I am having issues with executing commands in PowerShell. Specifically, I am having issues running the below command. When I log into an AWS EC2 and execute the same command in CLI using the same account credentials it runs without failure. The error I receive states "Insufficient privileges to perform this action." I even went as far as using the admin account and I still receive the same error. I do not believe this matters, but I am running PowerShell on my local PC. Any guidance would be appreciated.
Command that generates the error
aws backup list-recovery-points-by-backup-vault --backup-vault-name Default --max-results 10000
PowerShell script I created for this purpose
Set-AWSCredential `
-AccessKey XXXXXXXXX `
-SecretKey XXXXXXXXX/XXXXXXX`
-StoreAs "MyProfile"
aws backup list-recovery-points-by-backup-vault --backup-vault-name Default --max-results 10000

Answer 1

Your Set-AWSCredential command is creating a profile named "MyProfile", But your aws command is not specifying which profile to use (aws backup --profile MyProfile ...) so its using one called "default"/ignoring the credentials hence you get an accessed denied.
It shouldnt work on Ec2... unless it has a role attached that already grants these same permissions or better (which gets assigned to the "default" profile as the instance starts)

Answer 2

The error was misleading and I was able to get this working to obtain my ultimate goal to delete recovery points by using the below script. The command I was running was not the correct command to be running for this operation.
Set-AWSCredential `
-AccessKey XXXXXX `
-SecretKey XXXXXXX `
-StoreAs "<ProfileName>"
$backups = Get-BAKRecoveryPointsByBackupVaultList -BackupVaultName Default
foreach ($backup in $backups)
{
Remove-BAKRecoveryPoint -BackupVaultName Default -RecoveryPointArn $backup.RecoveryPointArn -Confirm -Force
}