Hello everyone. I purchased a subscription to ARCGIS for single use. On the computer I had an old version of arcmap with a license. How do I replace the license with the current license?

[yakovgrintz]

Hello everyone. I purchased a subscription to ARCGIS for single use. On the computer I had an old version of arcmap with a license. How do I replace the license with the current license?

[DonShawEsri]

Hello, Yakov. 

First install the new version of ArcMap, and then use this guide to update your license.

Authorizing your software—ArcMap | Documentation