from–https://www.itsk.com/thread-404527-1-1.html

schtasks /Delete  /Tn “\Microsoft\Windows\End Of Support\Notify1” /f
schtasks /Delete  /Tn “\Microsoft\Windows\End Of Support\Notify2” /f

schtasks /Delete /Tn “\Microsoft\Windows\Setup\EOSNotify” /f
schtasks /Delete /Tn “\Microsoft\Windows\Setup\EOSNotify2” /f

reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\EOSNotify” /f /v “DiscontinueEOS” /t REG_DWORD /d “1”
reg add “HKCU\Software\Microsoft\Windows\CurrentVersion\SipNotify” /f /v “DontRemindMe” /t REG_DWORD /d “1”