A new update for the Windows 11 and Windows 10 operating systems – as I recall are the only ones currently supported by Microsoft – was installed on the users’ computers with one and only goal: to check which version of Office is being installed on the customers’ computers.
The update, whose number was determined as KB5021751, was actually intended for Office and was installed on all computers that support automatic updating of the operating system. According to Microsoft, it was run only once without actually installing any software on the host computers, and quietly behind the scenes.
“This update is designed to help Microsoft identify the number of users who are working with unsupported (or soon to be unsupported) versions of Office, including Office 2013, Office 2010, and Office 2007,” the update page says, but it did not provide a reason for doing so. – although it is not difficult to guess why.
Office 2007 and Office 2010 are no longer officially supported by Microsoft. Office 2013 is coming to an end which should be in April this year, that is in about three months.