The system will perform an edition downgrade (technically a conversion) and request a reboot. After reboot , use /ato to activate.
No. They are legally obligated to maintain activation servers for all validly licensed products, even after end-of-life. However, telephone activation may become slower. The system will perform an edition downgrade (technically
No. Keys are edition-specific. A Server 2012 key (Build 9200) will not activate R2 (Build 9600). even after end-of-life. However
DISM /online /Set-Edition:ServerStandard /ProductKey:YOUR-PRODUCT-KEY /AcceptEula Replace ServerStandard with ServerStandardEval if needed, but typically it’s just ServerStandard. but typically it’s just ServerStandard.