KMSoffline v2.4.5 (Activator for Windows & Office)
KMSOffline, developed by Ratiborus, is a new activator tool capable of activating a range of Microsoft products, including Windows XP, Vista, 7, 8, 8.1, 10, 11, Server editions 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, and various Office versions such as 2010, 2013, 2016, and 2019 Volume editions.
VirusTotal:
https://www.virustotal.com/gui/file/0704c4a6835e3c0e206bf0d1e7300c3a7fcf9103a59ead4825de746357f126f2