I can not connect to workspaces

Hello, I want to have a quick test on AWS workspaces. I created a VPC and two private subnets and two public subnets. Plus internet gateway for them. Then I launched an AD standard using two private subnets and registered it for workspaces. When I want to log in, I get this error "error_type_authentication workspaces". I checked every step. The username and password is correct.