It sounds trivial, but it happens to seasoned engineers. Many router passwords are case-sensitive and contain special characters.
Start ↓ Typed credentials correctly? → No → Retry ↓ Yes Try MAC WinBox login? → Works → Problem was IP/firewall ↓ No SSH works? → Yes → Update WinBox / clear cache ↓ No Physical access? → Yes → Serial console → reset user ↓ No → Netinstall / factory reset winbox error wrong username or password
If you store your password in a password manager, ensure you are not copying invisible line breaks ( \n or \r ). Paste the password into a text editor first to confirm length. It sounds trivial, but it happens to seasoned engineers
If you lost ALL credentials: use or reset button (will wipe config). It sounds trivial
⚠️ This removes all configuration.