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Solution Reported Issue and Workaround: Guest Network works only on Main Deco

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Solution Reported Issue and Workaround: Guest Network works only on Main Deco

27 Reply
Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-11-30 23:54:09
Same bug here, I've 05 Deco M9 V1 on 1.7.1, connected to an unmanaged TP-link switch, and the guest network stopped working. As I can see, the guest device can not receive the IP addess :(
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#23
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-12-01 03:57:21

  @LeandroZD 

Thanks for the feedback.

Have you tried the 1.9.1 beta firmware shared in the first post?

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65_V2_1.2.10 New Firmware with Enhanced Stability & Interference Resistance ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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#24
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-12-06 16:30:14

  @David-TP 

will this 1.9.1 beta firmware work for Deco m9 plus with HW V1.0 ?

 

Best regards

Jan

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#26
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-12-08 06:25:06

  @Janli 

No, it doesn't. It is only for V2.0/V2.2.

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65_V2_1.2.10 New Firmware with Enhanced Stability & Interference Resistance ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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#27
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-12-08 08:00:34

  @David-TP 

 

I am having the same problem as Leandro (the previous person you replied to) with my M9's plus v1.0 running fw.1.71
I am not able to get IP's on guest net, I am also using an unmanaged switch.
I believe all problems started with fw.1.6.1

Suggestions?

 

Best regards

Jan

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#28
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2025-12-09 03:32:40

  @Janli 

Hi, did the temporary workaround here help:

"Currently, some users have confirmed that restarting the ISP modem again after enabling the Guest Network resolves the reported issue."

Best regards.

▶Check What's Currently Going on With Deco ▶Deco X50_V1_1.8.0 Significantly Expanded the Client Connection Details and Added Channel Selection ▶Deco X50/X55_V1.3_1.3.1 Introduced Channel Selection, WiFi Access Control and WireGuard VPN ▶Deco BE65_V2_1.2.10 New Firmware with Enhanced Stability & Interference Resistance ▶Deco BE75 1.1.0 Added WireGuard VPN, Manual Channel Selection and More Try to leave a Message if urgent help is required.
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#29
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Re:Reported Issue and Workaround: Guest Network works only on Main Deco
2 weeks ago

  @David-TP 

So, let's summarize a bit:

  • The issue with the guest network was discovered in March/April 2025.
  • Since then (I'm writing this post at the end of December 2025, so at least 8 months after the issue was discovered), the only solution to fix the problem is to install beta firmware.
  • Some devices (for example, the M9 Plus V1) didn't even get a fixed beta firmware to address the issue.
  • While the beta firmware helps, the network is still very unstable.

 

Great job, TP-Link. Fantastic customer service.

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#30
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