If you are currently running this version, keep these dates and compatibility issues in mind: Update history for Office 2016 C2R and Office 2019
The "VL" in your query refers to the version, which uses a specific activation method called the VL Serializer .
For IT admins, version 16.17 was a "fork in the road." Office 2016 perpetual licenses were capped at 16.16.x. Moving to 16.17 required a new 2019 license.