Microsoft has released 3 optional updates for Windows 7 RTM, Windows 7 SP1 and Windows 8.1. All updates are available via Windows Update or via WSUS. If you don't intend to upgrade to Windows 10, you can hide this updates.
Update for Windows 7 SP1 (KB2952664)
Update KB2952664 for Windows 7 SP1 (Compatibility update for upgrading Windows 7) performs diagnostics on the Windows systems that participate in the Windows Customer Experience Improvement Program. These diagnostics help determine whether compatibility issues may be encountered when the latest Windows operating system is installed. This update will help Microsoft and its partners ensure compatibility for customers who want to install the latest Windows operating system.
Update for Windows 7 RTM (KB2977759)
Update KB2977759 is for Windows 7 RTM (Compatibility update for Windows 7 RTM) and has the same purpose as KB2952664.
Update für Windows 8.1 und Windows 8 (KB2976978)
Bei Update KB2976978 for Windows 8 and 8.1 (Compatibility update for Windows 8.1 and Windows 8) also performs diagnostics on the Windows systems that participate in the Windows Customer Experience Improvement Program. These diagnostics help determine whether compatibility issues may be encountered when the latest Windows operating system is installed. This update will help Microsoft and its partners ensure compatibility for customers who want to install the latest Windows operating system.
