Note: For Microsoft Windows 98 SE and NT 4.0, the driver for this package can be obtained here.

	Summary of changes
	Driver limitations for Windows 2000 and XP
	Installation information for Windows 2000, and XP
	Determining which version is installed

Version 4.1.2.156 (77WC39WW)

• (Fix) Connection do not recover when channels are changed in 802.11a mode

Click here for a complete list of changes fixed by this driver update.

• If you currently use IEEE 802.1x authentication on Windows XP Service Pack 1 and do not use WPA encryption, it is recommended to uninstall Q826942 (WPA Supplicant update in Windows XP ) and Q815485 (WPA Wireless Security Update in Windows XP).
  To check if the Q826942 or Q815485 is installed and to uninstall it:
  1. Start Windows XP and logon with administrative privileges.
  2. For Windows XP with Classic Start menu, click Start, select Settings, and click Control Panel. Otherwise, click Start, then click Control Panel.
  3. Click Add or Remove Programs.
  4. Click Windows XP Hotfix (SP2) Q826942 or Windows XP Hotfix (SP2) Q815485 if it is listed under Currently installed programs.
     Note:
     The above action will remove all the fixes within the update rollup package, Q826942. You may need to reinstall the other specific hotfixes you expect for this rollup package.
  5. Click Remove and follow the instructions on the screen.
     
     
• If you use Windows 2000, please stop the Microsoft Wireless Configuration service if already installed. To check if the service is installed and to stop it:
  1. Start Windows 2000 and logon with administrative privileges.
  2. Click Start, select Settings, then click Control Panel.
  3. Double-click Administrative Tools then Services.
  4. Double-click Wireless Configuration if it is listed.
  5. Change Startup type to Disabled if it is not.
  6. Click OK.
     
     
• You may need to re-enter security information after updating the Wireless LAN driver.
  
  

• The following software must be updated when you install this package.
  • Access Connections version 4.11 or later
  • Hotkey Features for Windows 98/Me/NT/2K/XP version 1.22.0512 or later
• Software Installer application provides install and uninstall wizards for this Wireless LAN Driver for Windows 2000 and XP.

1. Start Windows 2000 or XP and logon with administrative privileges.
2. Extract this package to the hard drive.
3. Click Start, then click Run.
4. In the Open field, type the directory where the file was downloaded and extracted to.
5. Follow the instructions on the screen.
6. Restart the system.
   
   

1. Refer to the Manual Install section, and download and expand the files.
   
2. At the command line, execute SETUP.EXE with the -S option.
   
   [Path where the files were extracted]\SETUP -S
   
   

1. Start Windows 2000 or XP and logon with administrative privileges.
   
2. Windows XP: Click Start, then click Control Panel.
   Windows 2000: Click Start, select Settings, and then click Control Panel.
   
3. Double-click Add/Remove Programs.
   
4. Click ThinkPad Wireless LAN Adapters Software (11a/b, 11b/g, 11a/b/g).
   
5. Click Change/Remove and follow the instructions.
   
6. Restart the computer.
   
   

1. Start Windows 2000/XP.
2. Windows 2000: Click Start, select Settings then click Control Panel. Double-click the Add or Remove Programs icon.
   Windows XP: Click Start, select Control Panel. Click the Add or Remove Programs icon.
3. Click ThinkPad Wireless LAN Adapters Software(11ab, 11b/g, 11abg).
4. Click Click here for support information.
5. Check the driver version.