Here are some problems you might encounter while working with passwords and user accounts.
If the system crashes during the update, and /etc/.pwlock still exists, passwd refuses to work until the system administrator removes the file.
If the password files are left in an inconsistent state as a result of the crash, the system administrator should also copy the backup files, /etc/oshadow and /etc/opasswd, to /etc/shadow and /etc/passwd to prevent additional problems.
To avoid giving clues to unauthorized users, login doesn't tell you whether it's the user name or the password that's wrong. If you can't resolve the problem yourself, your system administrator (root user) can set a new password on your account.
This symptom can also occur if one or more password-related files are missing. If the system administrator is in the middle of updating the files, it's possible that its absence will be temporary. Try again in a minute or two if this might be the case. Otherwise, see your system administrator for help.
If you are the system administrator and can't access the system, try accessing it from another QNX Neutrino machine using Qnet, or from a development host using the qconn interface.