Jeff Brewer wrote:
I changed my Apple ID password this morning. I used it to log into this forum. When I try to use it to login to my MacBook Pro it didn't work, but the old password works. How do I get my MacBook Pro to use the new password?
?
Typically you would expect your AppleID user/psswd is different then you macbook user name and psswd...
"Your Apple ID information is used to enable Apple services when you sign in, including iCloud Backup, which automatically backs up the data on your device in case you need to replace or restore it. Your device serial number may be used to check eligibility for service offers."
ref
Apple ID & Privacy
Check your Apple ID device list to see where you're signed in
Check your Apple ID device list to find where you're signed in - Apple Support
For your Mac user/admin account, ref: Change the login password on Mac - Apple Support
If you forgot your Mac login password you can use your AppleID to reset if necessary
https://support.apple.com/en-us/HT202860