USG 60 and ZyWALL 110 firmware 4.30 and 4.31 password must change; after change can not log in

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  • Christophe31
    Christophe31 Posts: 6
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    Hello,
    I have the same probleme in USG60W....
    in the documentation: 
    https://businessforum.zyxel.com/discussion/1558/how-to-backup-running-configuration-if-forgot-password https://businessforum.zyxel.com/discussion/1558/how-to-backup-running-configuration-if-forgot-password

    What type of encryption is used?

  • Zyxel_Emily
    Zyxel_Emily Posts: 1,296  Zyxel Employee
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    Hi @Christophe31,

    The encryption algorithm cannot be provided.

  • Zelly
    Zelly Posts: 1
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    Hi fellows. I was just affected by this incredibly sneaky bug. 
    I was prompted to set a new login for my admin-user at login. So I generated the quite complex password: BTwaf2@$9%hC^D&w which the box saved without comment.
    After this I could not login anymore. 

    After finding this thread I tried a couple of variations of the password with no success. Then I realized that $ is a common character to identify variables. Assuming that the Zywall took $ as a start of a variable (and probably would not accept % as part of a variable name) I removed $9 and logged in just fine. 


    So Andrea was on the right track. But it's not if it's ending with a special character, just remove one character after the $ until you find the right password. 

  • jw708
    jw708 Posts: 16  Freshman Member
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    I'm having this problem, but the password started with ' and then alphanumeric characters. Any ideas?
  • Remo
    Remo Posts: 9
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    Running version V4.38 on a USG40W this problem still exists. No warning or error appeared after password renewal. For us this is a reason to change the supplier.
  • Zyxel_Charlie
    Zyxel_Charlie Posts: 1,034  Zyxel Employee
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    edited November 2020
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    @Remo
    With firmware: v4.39
    The account:admin with password: BTwaf2@$9%hC^D&w can be accepted by device, and I can login. Can you share what password are you using?
    What firmware are you using?

    If you meet the same issue(cannot login) because the password is expired, have to follow the FAQ to recover the configuration and set a new password.


  • Nera
    Nera Posts: 1
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    Was this ever resolved? I have the problems on some devices and dont want to go to the customer to reset the password.

    The old password was like:

    xxxxxx$

    the new one:

    xxxxxx$$

    Which password could i try?

  • Zyxel_Jeff
    Zyxel_Jeff Posts: 1,066  Zyxel Employee
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    Hi @Nera

    May we know what is the firewall model and firmware version you are using now? Thanks.

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