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Realtek Semiconductor Corp. - Bluetooth - 1.9.1040.4000 Driver 1.9.1040.4000

by Realtek8.1832-bitSHA-256 verified

Manufacturer
Realtek
Device
Realtek Semiconductor Corp. - Bluetooth - 1.9.1040.4000
Driver version
1.9.1040.4000
Release date
December 6, 2021
Supported Windows
Windows 8.1, Windows 8
Architecture
32-bit (x86)
File size
273 KB
File name
7d8e895b-5139-40b8-afd3-e47ff93ceaa8_aac7de9d33ec514d4354b16428aa99f5bbff7d1f.cab
Digital signature
Signed - catalog RtkFilter.cat
INF version
12/06/2021,1.9.1040.4000
INF provider
Realtek Semiconductor Corp.
Device class
Bluetooth
Source
Microsoft Update Catalog
Last verified
July 8, 2026
SHA-256
3e8cdef95000fbbde04d3ab5e2ffda6c46d31fddba6d70ba49c30dc9d62685bc

Supported hardware IDs (1)

Compare with your device: Device Manager → right-click the device → Properties → Details → Hardware Ids. If one of the values above matches, this driver supports your hardware.

How to install

  1. Create a restore point(Start → "Create a restore point" → Create), so you can roll back if anything goes wrong.
  2. Verify compatibility: your Windows version (Windows 8.1, Windows 8) and architecture (x86)must match this driver, and your device's Hardware ID should appear in the list above.
  3. Download the file using the button - it comes directly from Microsoft Update Catalog.
  4. Optionally verify the checksum: open PowerShell, run Get-FileHash your-download.cab -Algorithm SHA256 and compare with the SHA-256 above.
  5. Extract the .cab archive: right-click → Extract All, or run expand -F:* file.cab C:\driver\ in Command Prompt.
  6. Install via Device Manager: right-click your device → Update driver → Browse my computer → point to the extracted folder. Alternatively run pnputil /add-driver C:\driver\*.inf /install.
  7. Check Device Manager: the device should show no warning icons, and the driver version should match.

How to roll back

If the device stops working after the update: Device Manager → right-click the device → Properties → Driver tab → Roll Back Driver. If the button is greyed out, use the restore point from step 1 (Start → "Recovery" → Open System Restore).