Cisco Cisco Aironet 350 Wireless LAN Client Adapter Release Notes

CSCsq03569—The client does not reassociate with the access point after manual deauthentication

A controller is configured so that Management Frame Protection (MFP) is optional on the wireless 
LAN. The client associates with WPA2 with MFP and AES-CCMP. The controller shows that the 
client has negotiated MFP successfully. After the controller issues a deauthentication frame to the 
client, however, the client does not reassociate successfully.

Workaround: Reattempt to reconnect using the same profile.

CSCsq03578—The client does not reassociate with the access point after the access point sets client 
MFP to none

The client does not reassociate successfully after the access point sets client MFP from optional to 
none.

Workaround: Reattempt to reconnect using the same profile.

If you are a Cisco registered user, you can use the Cisco TAC Software Bug Toolkit, which consists of 
three tools (Bug Navigator, Bug Watcher, and Search by Bug ID Number) that help you to identify 
existing bugs (or caveats) in Cisco software products. 

Access the TAC Software Bug Toolkit at the following URL:

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at

Click Product Support > Wireless. Then choose your product and Troubleshooting to find information 
on the problem you are experiencing.

For more information about Cisco Aironet CB21AG and PI21AG client adapters on computers that are 
running Microsoft Vista, refer to the following documents:

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and 
Configuration Guide for Windows Vista (OL-16534-01)—Provides instructions for installing, 
configuring, and troubleshooting CB21AG and PI21AG client adapters on computers running the 
Microsoft Windows Vista.