Microsoft has issued the KB 3150513 patch 10 times in the past year. Each time it appears without notification or warning: There’s no entry on the Windows Update list or Windows 10 Update list, but it is pushed out the Automatic Update chute nonetheless.

It’s being pushed onto Windows 7, 8, 8.1, Windows 10 151,1 and now 1607 systems. You don’t want it.

A year ago, I talked about the original incarnation of the patch, which Microsoft’s KB article described like this:

This update provides the latest set of definitions for compatibility diagnostics that are performed on the system. The updated definitions will help enable Microsoft and its partners to ensure compatibility for all customers who want to install the latest Windows operating system. Installing this update also makes sure that the latest Windows operating system version is correctly offered through Windows Update, based on compatibility results.

The KB article lists the files included in the patch: Appraiser.sdb, Appraiser_data.ini, and Appraiser_telemetryrunlist.xml. One might correctly assume that KB 3150513 is all about telemetry.