SQL Server 2019

By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.

exec sp_reset_connection
Msg 208 Level 16 State 9 Line 1
Invalid object name 'sp_reset_connection'.

exec sys.sp_reset_connection
Msg 208 Level 16 State 9 Line 1
Invalid object name 'sp_reset_connection'.

exec master.sys.sp_reset_connection
Msg 208 Level 16 State 9 Line 1
Invalid object name 'sp_reset_connection'.