ptk update fail

Posted on 2011-02-25
Last Modified: 2012-05-11
I have Cisco WAP4410N wireless access point I' getting this message every day in the log

hostapd: ptk update fail

Is anyone know what does it mean?
Question by:Yadtrt
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Expert Comment

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PTK is related to the authentication protocol, see here

Do you have  connection with some devices, for example mobile phones?


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I meant "do you have connection problem with some devices"

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Noi dont have connection to mobilephone.
Still I dont understand what does it mean? do I have real problem

Accepted Solution

kemi67 earned 500 total points
Comment Utility
PTK is part of the process of a wireless client authentication
hostapd: ptk update fail,  means that there was a problem in such authentication process.

You have a real problem if you see that your connections drop, but if this is a random message, you can ignore this.
It is hard to discover who is causing that. Try to discover the exact time when it happens: while a client start up, or every day at the same our, or when you connect a new device.

It could be or not a problem: if you notice faulty wireless connection, this message is a warning, otherwise it is not a problem

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