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Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 10:37 am
by el berto
Hi to all,
ROs 6.19, RB433AH

I usually login through winbox, but suddenly "authentication failed".
Username and password saved in winbox, so I suppose an hack.
I login through webfig (same user) and I can logon.
Under "resources" I can read "bad blocks" = 0.1%.
Could be this?
Should I change RB before it will crash completely?
Thanks.

Re: Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 12:15 pm
by R1CH
6.19 is very old and the device is likely hacked, you should netinstall a secure version.

Re: Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 12:27 pm
by Lifz
Upgrade your device to latest stable or long-term RouterOS version, Winbox should be upgraded too.

Re: Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 12:53 pm
by el berto
Absolutely no way problem could be created by bad blocks?

Re: Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 1:27 pm
by Lifz
According to the manufacturer of NAND chips, up to 5 blocks can be bad when NAND is manufactured, and up to 80 bad blocks could develop during operation, but it will not disturb the operation of your router, because complex workaround mechanisms are in place, that will copy the data to another block and attempt to fix the bad block.

https://wiki.mikrotik.com/wiki/Manual:R ... bad_blocks

Re: Winbox login: authentication failed, maybe due to bad blocks?

Posted: Thu Aug 01, 2019 4:17 pm
by victorsoares
My guess is that your Winbox version is too recent to authenticate on 3.19. As the colleagues said, upgrading your ROS should be the first step, but just to login you should be fine with an older version of Winbox.