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Beginner

Decrypt Errors on WLC version 7

Hello

I am seeing a lot of the following showing up in the WLC trap log:

Decrypt errors occurred for client <CLIENT-MAC> using WPA2 key on 802.11b/g interface of AP 00:17:0f:81:ad:90

I have done a fair amount of searching about and I cant seem to find a clear explanation for this message.  Could someone suggest what might be causing these issues and how to resolve them?

For refernce we are using WLC runninn 7.0.98 and ACS 4.0

Thanks in advance.

2 REPLIES 2
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Cisco Employee

Always the same client(s) ?

What is the driver revision and hardware adapter of the affected client(s) ?

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Its a fair range of clients across several APs in the building.  I havent got an exact list of

clients but I know its both old and new Lenovo/IBM laptops as well as Macbooks and Macbook Pros.

Our APs are the 1131AGs if that helps.