Unactivated Windows 10 Pro works forever. The only limitations:
Everything else – updates, apps, gaming, security – works perfectly. bit.ly windows10protxt
[Windows10Pro]
PCName=Workstation-01
AdminUser=localadmin
AdminPass=Secure@123
TimeZone=Eastern Standard Time
DisableTelemetry=1
RemoveBloatware=Yes
EnableRDP=Yes
InstallApps=7zip.7zip, Google.Chrome, VideoLAN.VLC
RunPostScript=C:\Setup\finalize.ps1
If you are looking for the content usually found in that text file, the most common Generic Volume License Key for Windows 10 Pro is: Unactivated Windows 10 Pro works forever
W269N-WFGWX-YVC9B-4J6C9-T83GX
(Note: Other keys exist for Pro N, Pro Workstation, and Enterprise editions, but the above is the standard Pro key.) Everything else – updates, apps, gaming, security –