getting errors from my Cisco 2504 Wireless Lan controller syslog

getting errors from my Cisco 2504 Wireless Lan controller syslog

MYWLC: *Dot1x_NW_MsgTask_2: 1x_ptsm.c:730 Client MAC Address may be using an incorrect PSK

i have been noticing some dropped connections lately so i decided to setup syslog and seeing hundreds of these errors
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IT GuyAsked:
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ITguy565Commented:
Those errors would indicate that the client has the wrong wireless key stored in memory. If you can locate the client you can resolve the issue by just updating the stored wireless information.
Benjamin Van DitmarsSr Network EngineerCommented:
Are there have been changes on your wlc, firmware, settings etc.
i had this in the past when one of our engineers enabled multicast on one of the controllers, and a couple of lenovo wireless users where kicked out. after a firmware update on the controller and driver updates on the clients resolved the problem.
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