AVM 3370 20002563 Manuel D’Utilisation

FRITZ!Box 3370

100

Cannot Establish a WLAN Connection

Testing a Non-Encrypted WLAN Connection

Test whether a non-encrypted WLAN connection between the 
FRITZ!Box and the WLAN adapter is possible.

1.

Connect a computer to the FRITZ!Box with a network ca-
ble (see 

).

2.

Open the FRITZ!Box user interface (see 

).

3.

Select “WLAN / Security”.

4.

Enable the “non-encrypted” option.

5.

Click the “Apply” button.

6.

Remove the network cable and try again to establish a 
connection.

If you cannot establish a non-encrypted WLAN connection, 
make sure that the WLAN adapter in your computer is in-
stalled correctly. If the error cannot be remedied, contact the 
manufacturer of the WLAN adapter.

Installing the Current Service Pack for Windows XP

The WLAN connection to the FRITZ!Box cannot be established 
using the Microsoft WLAN Service (WZC: Windows Zero 
Configuration) in Windows XP with Service Pack 2.

The required Microsoft patch for WPA2 (IEEE 802.11i) may not 
be not installed.

Install Service Pack 3 (SP3) for Windows XP, available as a 
free download from Microsoft. Then Microsoft WLAN Service 
will support WPA2, so that a WLAN connection can be estab-
lished to the FRITZ!Box.

Disable WLAN encryption only for testing. Enable WLAN 
encryption right away after completing the tests.

Cause

Help