If i reset and i re-configure, data they will be lost?I'm afraid its a reset and re-configure. There's no way to reset a password.
Be safe, netinstall for a Clean router.
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I don't have backup, i can't login to my routerJust reset your router ASAP and upload backup. That's it.
ERROR: wrong username and passwordTry older versions of Winbox. For example http://download2.mikrotik.com/routeros/ ... winbox.exe
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