mysqldump Error 1045 Access denied despite correct passwords etc

This is a tricky one, I have the following output:

mysqldump: Got error: 1045: Access denied for user 'root'@'localhost' (using password: YES) when trying to connect

When attempting to export my database with mysqldump on Windows XP. The username is root, the password is correct and contains only alphanumeric characters. I have tried different cases, with/without quotes, specifying using -u and -p, specifying using --user= and --password= and other methods of specifying user/passwords etc, specifying the host (it's all local) and even specifying the database using --databases instead of just blank. The error is always the same when using a password and always the same except the "NO" message when without. I have tried many fixes found through searches with no success. One fix suggested inspecting mysql.conf, but the Windows build doesn't seem to have one. The credentials (and indeed commandline parameters) work perfectly with mysql.exe - this problem only seems to be affecting mysqldump.exe.

This worked for me

mysqldump -u root -p mydbscheme > mydbscheme_dump.sql

after issuing the command it asks for a password:

Enter password:

entering the password will make the dump file.

If you're able to connect to the database using mysql, but you get an error for mysqldump, then the problem may be that you lack privileges to lock the table.

Try the --single-transaction option in that case.

mysqldump -h database.example.com -u mydbuser -p mydatabase --single-transaction  > /home/mylinuxuser/mydatabase.sql