You have recently changed your banking password. When you attempt to connect to online banking in QuickBooks for MAC, the following message displays:
Username or password is invalid.
In QuickBooks, you enabled the option Add password to Keychain when you initially set up online banking. This causes QuickBooks to attempt to use a previously saved password when you connect to online banking.
To resolve the issue, you need to delete the previously saved password and re-launch online banking.
If you need to reset the Keychain Access password: