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Network_Fortinet
Network_Fortinet
New Member
November 13, 2024
Question

FortiAP Error Message : Action: client-disconnected-by-wtp

  • November 13, 2024
  • 2 replies
  • 6169 views

Hi Team, 

 

There are certain users facing random wireless connection on the FortiAPs. 

For an example two users facing the same problem and they are connected to the same AP. 
Do you know what is causing this problem? 

 

Here is the following error message: 

 

Action: client-disconnected-by-wtp

Reason: "Disassociated due to an excessive number of frames requiring acknowledgment, which are not acknowledged because of AP transmissions and/or poor channel conditions."

 

Model: FAP-231F

Software: 7.2.4-build0395

2 replies

Stephen_G
Moderator
Stephen_G
Moderator
November 17, 2024

Hello,

 

Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.

 

Thanks,

Stephen_G - Fortinet Community Team
    DG75
    DG75
    New Member
    March 14, 2025

    Any news about this issue? We are facing same issue with our brand new FP441K APs (running latest version 7.4.4).

    With the old ones (PU431F) the issue was not present (checked the old logs: no messages of this kind).

     

    Thanks

    Daniele

    Network_Fortinet
    Network_FortinetAuthor
    New Member
    March 14, 2025

    I didn't manage to capture these message for quite sometime but we have upgraded the AP to v7.0.5 the latest. We have a different issue which is related to teams. 

    pdw8
    Staff
    pdw8
    Staff
    November 18, 2024

    Sounds like you might have high airtime utilisation. This is caused by many different things but is primarily due to too many radios (AP and clients) trying to use the same channel. Each transmission requires an acknowledgement frame from the receiving end. If there is too much utilisation/interference, and the ack timeout is reached then the client gets disconnected.

    Check the channel utilisation column in the Managed FortiAP section on the Fortigate.

      Network_Fortinet
      Network_FortinetAuthor
      New Member
      November 19, 2024

      Thanks @pdw8 however I don't see any issues on the channel utilization when the client was facing the wireless dropout. 

       

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