Deco P7 wifi not working with KPN (ISP) box 12 modem / router

Deco P7 wifi not working with KPN (ISP) box 12 modem / router

Deco P7 wifi not working with KPN (ISP) box 12 modem / router
Deco P7 wifi not working with KPN (ISP) box 12 modem / router
2025-05-21 12:11:09 - last edited 2025-06-23 03:53:40

Hello,

 

Since last week I have KPN glasfibre at home. At first I experience many wifi issues due to the bad KPN modem box 12, which apparently has many issues. So KPN ISP replaced the modem for a new modem, but now I am experiencing issues with the TP link deco network which was always working fine.

 

Situation at home:

TP link mesh network 4 P7 discs connected via wifi

The main P7 disc has a cable connection with the KPN box 12

 

KPN box 12 seems to have a good connection all the time. Wifi is also working, but I prefer to use the TP link mesh network to have better wifi in all the rooms. Till last week this worked perfectly. So I guess the KPN Box 12 has some issues?

 

I have no clue where to look for the possible issue. I guess it is related to the ISP modem and not TP link.


My technical skills are limited which also doesn't help me ;-)

 

Thanks

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Re:Deco P7 wifi not working with KPN (ISP) box 12 modem / router-Solution
2025-05-27 09:35:32 - last edited 2025-06-23 03:53:40

  @Bazztiaan 

Hi, thank you for your time and patience.

Just in case there is anything wrong with the current main unit, it is suggested to set a different Deco as the main Deco:

How to replace the main Deco with another Deco

It is also suggested to replace a new Ethernet cable to connect the main Deco S7 to the KPN box.

And I do hope you can also test whether "Access Point" mode helps improve the stability.

 

By the way, I don't think the disconnection was related to that the KPN modem has wifi 6 standard technology, which should be fine for Deco P7.

Thanks a lot and best regards.

 

 

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Re:Deco P7 wifi not working with KPN (ISP) box 12 modem / router
2025-05-22 03:57:56

  @Bazztiaan 

Hi, thanks for the feedback.

Can you add more details about the WiFi issues with the WiFi network?

Have you seen any Deco S7 turn red?

 

KPN box 12 is also a wireless router. Did you set Deco P7 into Access Point mode?

(You can also disable the WiFi on the KPN box 12 if possible)

 

As Deco P7 is a powerline Mesh model, its network performance would also be affected by the powerline interference.

It is suggested to check whether the wireless connection issue might follow some specific units, then you can try to remove the nearby home appliances/high-power machines, and also change the power socket if possible.

Thank you very much.

Best regards.

 

 

 

 

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Re:Deco P7 wifi not working with KPN (ISP) box 12 modem / router
2025-05-22 08:42:39

  @David-TP 

 

Yes, the cabled Deco P7 disc turned red when it went offline, while the KPN modem was still working and also the default wifi network of this KPN modem.

 

 This is the KPN modem which is connected to the glasfibre box:

In the TP link app the default mode is turned on: wifi router mode, and not the accesspoint mode.

 

Regarding this remark:

As Deco P7 is a powerline Mesh model, its network performance would also be affected by the powerline interference.

 

The deco p7 network is already for 4 years in place and all discs are on the same spots when installing. Never had issues with nearby appliances / high power machines (which are also not present in the meter box where all internet devices are located).

 

Can it issue also be related to the fact that the KPN modem has wifi 6 standard technology? Which be more advanced then the TP link discs?

 

 

 

 

 

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Re:Deco P7 wifi not working with KPN (ISP) box 12 modem / router-Solution
2025-05-27 09:35:32 - last edited 2025-06-23 03:53:40

  @Bazztiaan 

Hi, thank you for your time and patience.

Just in case there is anything wrong with the current main unit, it is suggested to set a different Deco as the main Deco:

How to replace the main Deco with another Deco

It is also suggested to replace a new Ethernet cable to connect the main Deco S7 to the KPN box.

And I do hope you can also test whether "Access Point" mode helps improve the stability.

 

By the way, I don't think the disconnection was related to that the KPN modem has wifi 6 standard technology, which should be fine for Deco P7.

Thanks a lot and best regards.

 

 

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