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Windows XP wireless problems after windows update: Q815485 1

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pramno1

Technical User
Jun 19, 2003
4
US
Windows XP wireless problems after windows update:

Summary:

This document describes the reasons for wireless connection loss after windows update in windows xp machine and the ways to overcome it.

This document is provided in as is basis no warranty whatsoever will cover the consequences of any results. The readers are requested to try these steps in their own risk

Problem:

The document is specific to the wireless problem in windows xp where the user loses the wireless connection after running windows update ( and not installing the service pack ) in his machine.

This happens because of the installation of a recommended hotfix (815485) from microsoft from XP. This hotfix is a part of an optional but recommended windows xp update which adds WPA support to the wireless card drivers.

The indication of this problem can be like this,

1. After the wireless card is enabled and connected to the AP it will not get an IP address nor will it be able to ping to the AP. The wireless connection properties will say that it is connected with good signal strength, it will also send packets but not receive any packets back.

2. The Wireless status will say "One or more wireless networks available" when the user tries to connect , it will not connect , but it will continue to say "One or more wireless networks available". Whatever the user does will not help himto connect to the AP.

Solution:

To solve this problem we need to either uninstall the update or enable encryption in the wireless network in open key mode.

Uninstallation of the hotfix:

1. Go to control panel " Add remove programs".
2. Scroll to the bottom and look out for an entry which says,
"Windows XP Hotfix (SP2)Q815485"
and remove it

Enabling encryption:

The user can enable encryption in his wireless network which will also fix this problem. To enable encryption the user first needs to enable encryption in his AP and follow these steps to enable encryption in the wireless card.

1. Right click on the network icon in the system tray and click on " View available networks",
2. Select the network name or SSID of the AP,
3. Enter the encryption key in the fields " Network key " and " Confirm network key",
4. Uncheck the checkbox which says "Enable 802.1X authentication for this network" and click on connect.

After a few seconds the user will be able to establish an encrypted connection to his wireless network.

The user can also alternately configure encryption using the following steps,

1. Right click on the network icon in the system tray and click on " View available networks",
2. Click on the button advanced.
3. It will take the user to the "Wireless networks" tab of the wireless area connection properties window.
4. Select the entry in the preferred network and delete it,
5. Select the entry in the "Available networks " and click on configure,
6, In the configuration window select the Data encryption as WEP and Network authentication as Open system,
7. Click on the TAB Authentication and uncheck the check box which says "Enable 802.1x authentication"

Click OK twice to come back to the desktop and check the connection to the router, which will be active now.

Disabling the Wireless Zero configuration:

If the wireless card vendor has supplied a utility program for windows xp, the user can install the utility and disable the Wireless zero configuration.

The user can follow these steps to disable the Wireless zero configuration.

1. Go to the wireless networks tab of the wireless area connection properties window.
2. Uncheck the check box which says " Use windows to configure my wireless network"

Checked configurations:

1. SMC2404WBR + Windows XP professional SP 1 + Q815485 + SMC2632w V2. - positive

Able to connect but not able to receive packets, the computer with the wireless card goes on sending packets but is not receiving the packets.

2. SMC2404WBR + Windows XP professional SP 1 + Q815485 + SMC2435 - negaitve

3. SMC2404WBR + Windows XP professional SP 1 + Q815485 + SMC2662w V3. - positive

Not even able to connect without encryption, only if encryption is enabled able to connect. Shows one or more available networks over and over again

3. SMC2404WBR + Windows XP professional SP 1 + Q815485 + SMC2664 - positive

Not even able to connect without encryption, only if encryption is enabled able to connect. Shows one or more available networks over and over again.

4. SMC2404WBR + Windows XP professional SP 1 + Q815485 + SMC2335 - negaitve

Please keep the results posted.
 
For the Linksys WPC11 Versions 2.5 and 3, a similar problem can be seen with the application of the 6/5/03 WPA enabled device driver from Linksys.

The card under XP can authenticate to the AP but throughput is dramaticly reduced.

Note at this time 6/20/03 the Linksys AP and Wireless router products only support WEP-based encryption. Firmware updates are promised for many of the router and AP products for WPA capability in the near future.

For the Linksys adapters the best choice is to not use the WPA-enabled driver sets released in early June, 2003 for the WPC11 adapter (or "rollback" the driver set); or for both the WPC54G and WPC11 adapter cards you must either:

. enable WEP-based encryption on both router/AP, and adapter card; or,
. Remove the Windows Q815485 hotfix.

 
pramno1
you might want to post this in the wireless forum
forum730
 
Thanks Bobg1, I just posted it there.
 
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