
Microsoft built in a 30-day automatic rollback capability into those 2 versions which provide a rollback capability if the users trying out W10 before they purchased a legit license for it did not like it and wanted to revert to an earlier version of windows that was on their machine prior to the W10 trial install. If your W10 is running either of those versions of W10 that means the W10 on your computer was installed between July 29th 2015 and July 29th 2016-during the 1 year free trial period of W10. This also is a situation with earlier versions of W10 such as v10240 and v1511.
