for shutdown my MacBook Pro does not recognize my admin name. keeps asking
I know my correct user admin name but I can't SHUTDOWN my computer as it keeps asking me to enter a valid user name and I try to repeat but still no go. Password seems OK as it does not ask for correction there. I have never had trouble SHUTTING DOWN in more than 8 years with Apple Mac Pro. HELP
MacBook Pro 13″, macOS 10.13