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Lenovo has identified an issue where Microsoft KB3161608 may break Bluetooth functionality on Windows 7 platforms with Intel wireless adapters that use third party supplemental BT profiles. It is known that key Bluetooth features won’t work, including HID, FTP, and A2DP.

 

When KB #3161608 is installed, the following symptoms have been reported:

  • The system will not pair with previously-paired Bluetooth devices
  • Bluetooth Options show grayed-out in Control Panel
  • Device Manager may show a generic Bluetooth Adapter device with a yellow exclamation point or bang
  • Error message "Windows has stopped this device because it has reported problems. (Code 43)
  • Event log shows event ID 17: "The local Bluetooth adapter has failed in an undetermined manner and will not be used. The driver has been unloaded."
  • Bluetooth Driver installation fails

 

While this KB is currently listed as an optional download in Windows Update, Microsoft has future plans to upgrade the priority to important soon. As a result, Intel is working with Microsoft to delay the promotion until all mitigations are in place.

 

If Bluetooth stops working on a system running Windows 7, please check to see if this KB has been installed, and if so, remove it and reboot your system.

 

Additional information can be found here:

http://www.infoworld.com/article/3099109/microsoft-windows/microsoft-yanks-buggy-speed-up-patch-kb-3...

 

**According to Intel, Microsoft KB3172605 may have replaced KB3161608, so be sure to roll back both updates.

https://communities.intel.com/message/408202

 

9/12/16 EDIT: Lenovo has released additional information in this Service TIP: https://support.lenovo.com/us/en/solutions/SF16-T0078

 

 

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isabel23

Good afternoon 

 

LENOVO IDEAPAD Y700

Today I am unable to connect the speaker through bluethooth, despite having tried all solutions give. 

Kindly assist. 

Regards Isabel 

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