This article describes an issue that occurs when a Bluetooth device connects to a computer in Windows 8.1 or Windows RT 8.1. An update is available to resolve this issue. Before you install this update, check out the Prerequisites section.

Symptoms

When you try to connect a discoverable Bluetooth low energy (Bluetooth LE) device, you receive the following error message:

Try again and make sure that the device is discoverable


How to obtain this update

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as an Optional update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

Note The update for Windows RT 8.1 can be obtained only from Windows Update.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

Prerequisites

To install this update, you must have April 2014, update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1.

Registry information

To apply this update, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update does not replace a previously released update.

The global version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows 8.1 file information and notes


  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.16 xxx

    Windows RT 8.1

    RTM

    GDR

    6.3.960 0.17 xxx

    Windows RT 8.1 and Windows 8.1

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Bthenum.sys

6.3.9600.17901

39,424

09-Jun-2015

22:02

x86

Bthmini.sys

6.3.9600.17901

23,552

09-Jun-2015

22:03

x86

Bthport.sys

6.3.9600.17901

1,014,784

09-Jun-2015

22:02

x86

Bthusb.sys

6.3.9600.17901

60,928

09-Jun-2015

22:02

x86

Fsquirt.exe

6.3.9600.17415

229,376

29-Oct-2014

01:28

x86

For all supported x64-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Bthenum.sys

6.3.9600.17901

53,248

09-Jun-2015

22:39

x64

Bthmini.sys

6.3.9600.17901

31,744

09-Jun-2015

22:39

x64

Bthport.sys

6.3.9600.17901

1,201,664

09-Jun-2015

22:38

x64

Bthusb.sys

6.3.9600.17901

81,920

09-Jun-2015

22:39

x64

Fsquirt.exe

6.3.9600.17415

241,152

29-Oct-2014

02:03

x64

For all supported Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Bthenum.sys

6.3.9600.17901

39,936

09-Jun-2015

21:11

Not applicable

Bthmini.sys

6.3.9600.17901

25,600

09-Jun-2015

21:12

Not applicable

Bthport.sys

6.3.9600.17901

949,248

09-Jun-2015

21:11

Not applicable

Bthusb.sys

6.3.9600.17901

59,904

09-Jun-2015

21:11

Not applicable

Fsquirt.exe

6.3.9600.16384

226,816

22-Aug-2013

02:39

Not applicable


Additional file information


Additional file information for Windows 8.1


Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_bth.inf_31bf3856ad364e35_6.3.9600.17901_none_0737fbe0d6eca9d1.manifest

File version

Not applicable

File size

4,629

Date (UTC)

10-Jun-2015

Time (UTC)

20:30

Platform

Not applicable


Additional files for all supported x64-based versions of Windows 8.1

File property

Value

File name

Amd64_bth.inf_31bf3856ad364e35_6.3.9600.17901_none_635697648f4a1b07.manifest

File version

Not applicable

File size

4,633

Date (UTC)

10-Jun-2015

Time (UTC)

20:33

Platform

Not applicable


Additional files for all supported Windows RT 8.1

File property

Value

File name

Arm_bth.inf_31bf3856ad364e35_6.3.9600.17901_none_073a6e38d6e9c897.manifest

File version

Not applicable

File size

4,629

Date (UTC)

10-Jun-2015

Time (UTC)

20:26

Platform

Not applicable




Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

See the terminology that Microsoft uses to describe software updates.

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