AVM FRITZ!WLAN USB Stick Installation, Configuration And Operation page 40

WLAN Connection Is Not Established: What to Do
40 FRITZ!WLAN USB Stick – 5 Troubleshooting
Error Scenario
The FRITZ!WLAN USB Stick is detected automatically in the
Windows XP and 2000 operating systems. However, the device is
not fully functional.
Possible Cause
The necessary service packs have not been installed.
Remedy
USB 2.0 support was integrated into the operating systems for the
first time with the current Microsoft Service Packs. To ensure full
operation capability, install the current service packs and updates
using the Windows Update function. We recommend at least Ser-
vice Pack 2 for Windows XP, or Service Pack 4 for Windows 2000.
For more information on the subject of support for USB 2.0 in Mi-
crosoft operating systems, see the
USB 2.0 bus system support information
and
Knowledge Base article
Error Scenario
A connection to an access point via the Windows XP Service Pack 2
WLAN service (WZC) fails with WPA encryption.
Possible Cause
The required WPA2 (802.11i) Microsoft patch is not installed.
Remedy
Support for WPA2 in Microsoft WLAN service was not available until
the current patch for Windows XP Service Pack 2. Install the current
patch from Microsoft:
http://support.microsoft.com/kb/893357/EN-US
822603.