50H 1.39 firmware DDNS error?

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kelmi
kelmi Posts: 52 image  Ally Member
First Comment Friend Collector Eighth Anniversary
in USG FLEX H Series

After upgrading from 1.38 to 1.39, DDNS stopped working. Dyny Basic. It keeps informing "user field is empty". It is not empty, profile was working perfectly with 1.38. Deleting and reimplementing the profile does not help.

K

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  • PeterUK
    PeterUK Posts: 4,680 image  Guru Member
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    edited August 11
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    What bit says "user field is empty"? screenshot

  • kelmi
    kelmi Posts: 52 image  Ally Member
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    Here we go.

    K

    username empty.png
  • PeterUK
    PeterUK Posts: 4,680 image  Guru Member
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    edited August 11
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    Hmm I think I know the issue it seems Dyny Basic is missing Username box for DDNS Account ? Could you check in 1.38 if it was ever there?

    but to workaround it use DDNS Type user custom

    with the Username as Email and password add your Domain and in the following

    URL Hostname: apiserver.dynu.com

    URL Path: /nic/update?hostname=

    and that will work

  • kelmi
    kelmi Posts: 52 image  Ally Member
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    edited August 12
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    Dynu seems to be the only DDNS account, where the Username- field is missing in 1.39. I don't recall, if Username-field was in 1.38, according to User Manual, seems to be so.

    I'm not sure I understand what you mean with your idea? I'm not too familiar with this topic.

    K

  • Zyxel_Melen
    Zyxel_Melen Posts: 5,039 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
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    Hi @kelmi,

    We are checking on this issue since we can replicate it. I will update you once I get further information.

    Zyxel Melen


  • PeterUK
    PeterUK Posts: 4,680 image  Guru Member
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    edited August 12
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    as said you can do the Dynu Basic by user custom

    Screenshot 2026-08-12 105933.png
  • Maverick87
    Maverick87 Posts: 330 image  Master Member
    Zyxel Certified Network Administrator - WLAN Zyxel Certified Network Administrator - Nebula Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate
    edited August 12
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    There is a note on dynu website.

    For the Zyxel USG50, latest firmware has removed "Username" field but that does not affect the IP update process. As long as you enter the correct "Domain name" and "Password", IP address for your domain name will be updated. The password should not have any symbols.

    Probably this affect also the newest H series.

  • kelmi
    kelmi Posts: 52 image  Ally Member
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    https://community.zyxel.com/en/discussion/comment/86487#Comment_86487

    Thank's for the info. Seems to be not the case. It really affects the IP update process within or with USG50H.

    K

  • Zyxel_Melen
    Zyxel_Melen Posts: 5,039 image  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
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    Hi @PeterUK @Maverick87 @kelmi

    Thanks for your discussion. Let me to update the behavior for Dynu Basic DDNS service option.

    This option doesn't need to enter username. You only need to enter the options in setup page(domain/password). This issue is because of the new feature.

    The issue has been addressed and will be fixed in the next firmware release.

    Zyxel Melen


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