We getting the below mentioned error continuously on the WLC when WIFI Voice phone associating with WLC - code(7.0.116.0) and phone firmware
1.3.4
Logs below:
*apfReceiveTask: Sep 28 08:20:17.937: %APF-3-USER_DEL_FAILED: apf_ms.c:5743 Unable to delete username VOICE-PHONE for mobile 00:22:00:11:cf:15
The documents says this mostly occurs due to incompatibility on the client side.
Below mentioned activites has been performed
1,Check if the client is Wi-Fi certified for WPA2 and check the configuration of the client for WPA2
2, Check the data sheet in order to see if the client Utility supports WPA2. Install any patch released by the vendor to support WPA2. If you use Windows Utility, make sure that you have installed the WPA2 patch from Microsoft in order to support WPA2
3, Upgrade the client's Driver and Firmware.
4, Turn off Aironet extensions on the WLAN.
