Between 4:09 AM and 5:00 PM PST we experienced increased error rates for some customers using Directory Services AD Connector or Managed AD with Directory Services in US-EAST-1 Region. This also impacted some services, like Amazon WorkSpaces, that can be configured to use Directory Services for user authentication. The issue has been resolved and the service is operating normally. Customers using other Active Directory functionality were not impacted by this issue. If you experience any issues with this service or need further assistance, please contact AWS Support.