This has happened more than once. We have compliance rates slowly creeping up, get to around 80%, and then suddenly drop to 1% or less with 1,800 clients unknown, a few successful, and a few in progress. I don't even know where to begin troubleshooting such an issue.
Several deployments are still showing the correct numbers, so this isn't all of them. Can anyone tell me where to begin with troubleshooting this issue?