I have tried all the suggestions I can find but no password works, the Hints are changed to fit a new password but doesn't change. I have been through the ID route without any success. I have trie the same former password 3 times without success. What to try - an older OS?
Colin
MacBook Pro 15″, macOS 10.13
Reset Computer Password
Intel Computer
1 - Restart computer and immediately hold Command + r keys
2 - Top Tool Bar >> Utilities >> Terminal
3 - Type resetpassword as one word and no spaces
4 - Press Return key
5 - Follow the prompts and remember the New Password
Apple Silicon M1 Computer
1 - Choose Apple menu > > Shut Down.
2 - Press and hold the power button on your Mac until you see “Loading startup options.”
3 - Click Options, then click Continue.
4 - Top Tool Bar >> Utilities >> Terminal
5 - Type resetpassword as one word and no spaces
6 - Press Return key
7 - Follow the prompts and remember the New Password
Reset Computer Password
Intel Computer
1 - Restart computer and immediately hold Command + r keys
2 - Top Tool Bar >> Utilities >> Terminal
3 - Type resetpassword as one word and no spaces
4 - Press Return key
5 - Follow the prompts and remember the New Password
Apple Silicon M1 Computer
1 - Choose Apple menu > > Shut Down.
2 - Press and hold the power button on your Mac until you see “Loading startup options.”
3 - Click Options, then click Continue.
4 - Top Tool Bar >> Utilities >> Terminal
5 - Type resetpassword as one word and no spaces
6 - Press Return key
7 - Follow the prompts and remember the New Password
Forgot Login Password on Mac OS X 10.13.6
