If you can't get your Bluetooth device, such as a BT headphone, to connect to your XP computer after applying service pack 2, it may be because the discovery option is turned off. This is also an issue with XP Tablet PC edition 2005. This option is turned off by default for security reasons. You have to turn on the discovery option to connect the device. Here's how:
1. Right click the Bluetooth icon in the notification area of the system tray.
2. Click Open Bluetooth Settings.
3. Click the Options tab.
4. Click to check the checkbox labeled "Turn discovery on."
5. Click Apply.
6. If you want other Bluetooth devices to be able to connect
to your computer, select "Allow Bluetooth devices to connect to this computer."
Note: If there is no Bluetooth icon in the notification area, click Start | Run and in the Run box type: bthprops.cpl, then click OK. You can turn discovery back off again after the device has created a connection to your computer, to prevent other devices from connecting without your knowledge. via
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