Use DeletePolicyVersion with an Amazon SDK or command line tool

To delete a version of a managed policy

This example deletes the version identified as v2 from the policy whose ARN is arn:aws:iam::123456789012:policy/MySamplePolicy.

aws iam delete-policy-version \
    --policy-arn arn:aws:iam::123456789012:policy/MyPolicy \
    --version-id v2

This command produces no output.

For more information, see Policies and permissions in IAM in the Amazon IAM User Guide.

Example 1: This example deletes the version identified as v2 from the policy whose ARN is arn:aws:iam::123456789012:policy/MySamplePolicy.

Remove-IAMPolicyVersion -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy -VersionID v2

Example 2: This example deletes a policy by first deleting all non-default policy versions and then deleting the policy itself. The first line retrieves the policy object. The second line retrieves all of the policy versions that are not flagged as the default into a collection and then uses this command to delete each policy in the collection. The last line removes the policy itself as well as the remaining default version. Note that to successfully delete a managed policy, you must also detach the policy from any users, groups, or roles by using the Unregister-IAMUserPolicy, Unregister-IAMGroupPolicy, and Unregister-IAMRolePolicy commands. See the example for the Remove-IAMPolicy cmdlet.

$pol = Get-IAMPolicy -PolicyArn arn:aws:iam::123456789012:policy/MySamplePolicy
Get-IAMPolicyVersions -PolicyArn $pol.Arn | where {-not $_.IsDefaultVersion} | Remove-IAMPolicyVersion -PolicyArn $pol.Arn -force
Remove-IAMPolicy -PolicyArn $pol.Arn -force