Microsoft has admitted that it incorrectly updated some Windows 10 machines to version 1709 despite users having paused update operations in their OS settings according to a report from BleepingComputer. Only users that were on V1703 were affected, in that version Microsoft added special controls to the Windows Update setting section that allowed users to pause updates in case they had an issue with the latest version. If you don't want your machines to update go to Services > Windows Update > Disable. We do it on test machines to prevent it from updating and skewing results, and I've used it on the PC at my day job, as it's an Athalon that was broken by a Windows update. "Microsoft is aware that this notification was incorrectly delivered to some Windows 10 Version 1703 devices that had a user-defined feature update deferral period configured. Microsoft mitigated this issue on March 8, 2018," the company said. Users who mistakenly received this update can downgrade if they want to.