RTL8821A Bluetooth Driver 1.3.865.3
by Realtek
This release in brief
- The only release of this driver in the catalog, published in May 2015.
- All 67 hardware IDs it lists are also covered by other drivers in the catalog - each hardware ID page lists them.
What you are downloading
This file comes straight from Microsoft's own download server - the same one Windows Update uses. We do not host it, repack it or change it in any way - the download button takes you to the manufacturer's server, not to a file of ours.
- Package
- 20745043_c649ec652ae662d3be3547cf31111bcbb8edd4d2.cab, 348 KB
- Published by
- Realtek Semiconductor Corp.
- Digitally signed
- Windows checks this signature before installing
- Inside
- 11 files - the driver itself, its setup instructions, a digital signature file and supporting libraries
Show the full listHide the list
- RtkBtfilter.sys601 KB
- Rtkfilter.inf8 KB
- rlt8723a_chip_bt40_fw_asic_rom_patch.dll36 KB
- rtkfilter.cat20 KB
- rtl8723b_mp_chip_bt40_fw_asic_rom_patch_new.dll50 KB
- rtl8723b_mp_chip_bt40_fw_asic_rom_patch_new_s1.dll50 KB
- rtl8761a_mp_chip_bt40_fw_asic_rom_patch_8192ee_new.dll49 KB
- rtl8761a_mp_chip_bt40_fw_asic_rom_patch_8192eu_new.dll49 KB
- rtl8761a_mp_chip_bt40_fw_asic_rom_patch_8812ae_new.dll50 KB
- rtl8761a_mp_chip_bt40_fw_asic_rom_patch_new.dll47 KB
- rtl8821a_mp_chip_bt40_fw_asic_rom_patch_new.dll34 KB
Nothing happens on its own: you download the file and decide yourself whether to install it.
- Manufacturer
- Realtek
- Device
- 2 devices - see the list below
- Driver version
1.3.865.3- Release date
- May 18, 2015
- Supported Windows
- Windows 10
- Architecture
- 64-bit (x64)
- File size
- 348 KB
- File name
20745043_c649ec652ae662d3be3547cf31111bcbb8edd4d2.cab- Digital signature
- Signed - catalog
RtkFilter.cat - INF version
05/18/2015,1.3.865.3- INF provider
- Realtek Semiconductor Corp.
- Device class
- Bluetooth
- Source
- Microsoft Update Catalog
- Last verified
- July 7, 2026
- SHA-256
c1a107153fe21032d5b2b2b01ea21c563e2a0cfea88d87f292888c0699d8f11e
Supported devices (2)
- RTL8821A Bluetooth (Realtek Semiconductor Corp.)
- RTL8723BU 802.11b/g/n WLAN Adapter (Realtek Semiconductor Corp.)
Supported hardware IDs (67)
- Realtek Bluetooth 4.0 chipUSB\VID_0BDA&PID_B001
- Realtek Bluetooth 4.0 AdapterUSB\VID_0BDA&PID_B006
- RTL8821A BluetoothUSB\VID_0BDA&PID_0821
- USB\VID_0BDA&PID_8760
- USB\VID_0BDA&PID_8761
- RTL8723B BluetoothUSB\VID_0BDA&PID_B728
- RTL8723A BluetoothUSB\VID_0BDA&PID_8723
- USB\VID_0930&PID_021D
- RTL8723B BluetoothUSB\VID_0BDA&PID_B723
- USB\VID_0BDA&PID_8A60
- USB\VID_0930&PID_0222
- USB\VID_0BDA&PID_B003
- Bluetooth (RTL8723BE)USB\VID_04F2&PID_B49F
- USB\VID_13D3&PID_3414
- USB\VID_13D3&PID_3459
- USB\VID_0930&PID_022F
- USB\VID_0BDA&PID_8753
- USB\VID_0BDA&PID_8754
- USB\VID_0B05&PID_17DC
- USB\VID_0489&PID_E094
- RTL8821A BluetoothUSB\VID_0BDA&PID_8821
- USB\VID_0BDA&PID_A723
- USB\VID_0BDA&PID_B002
- USB\VID_0BDA&PID_B004
- USB\VID_0489&PID_E08B
- USB\VID_0BDA&PID_2801
- USB\VID_0BDA&PID_2850
- USB\VID_0BDA&PID_B721
- USB\VID_0BDA&PID_B722
- RTL8723B BluetoothUSB\VID_0BDA&PID_B72A
- USB\VID_0BDA&PID_B761
- USB\VID_13D3&PID_3416
- BluetoothUSB\VID_13D3&PID_3394
- USB\VID_13D3&PID_3410
- USB\VID_B49A&PID_04F2
- USB\VID_0489&PID_E09E
- USB\VID_04F2&PID_B49A
- USB\VID_04F2&PID_B49B
- USB\VID_04F2&PID_B49C
- USB\VID_04F2&PID_B4A0
- USB\VID_0BDA&PID_0723&MI_00
- USB\VID_0BDA&PID_0724&MI_00
- USB\VID_0BDA&PID_0823&MI_00
- RTL8723AU 802.11n WLAN AdapterUSB\VID_0BDA&PID_1724&MI_00
- USB\VID_0BDA&PID_818C&MI_00
- USB\VID_0BDA&PID_8725&MI_00
- USB\VID_0BDA&PID_8762
- USB\VID_0BDA&PID_8763
- USB\VID_0BDA&PID_8A61
- USB\VID_0BDA&PID_A761
- + 17 more
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
Before you start: create a restore point (Start → type "Create a restore point" → Create). It takes a minute and lets you undo everything if the new driver turns out worse than the old one. This driver is made for Windows 10 (64-bit) - if your Windows is different, look for another version further down the page.
This driver comes as a .cab file. Double-clicking it will not install anything - Windows only shows you what is inside. Install it through Device Manager instead:
- Right-click the downloaded file → Extract All → choose a folder you will not lose (the Desktop is fine) → Extract.
- Hold the Windows key and press X, then open Device Manager.
- Find the device that is not working - it usually has a yellow triangle, or sits under "Other devices" with a name like "Network controller".
- Right-click it → Update driver→ "Browse my computer for drivers".
- Click Browse, choose the folder you extracted into, tick Include subfolders, then Next.
- Windows finds the driver in that folder and installs it. Restart the computer afterwards.
If Windows answers "The best drivers for your device are already installed" - that does not mean your driver is fine, only that Windows prefers its own version. In the same window choose "Let me pick from a list of available drivers" → "Have Disk" → Browse → point to the file ending in .inf inside the extracted folder → OK.
Check it worked: open Device Manager again. The device should no longer show a warning icon, and its driver version should match the one on this page.
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 that button is greyed out, use the restore point you made before installing (Start → "Recovery" → Open System Restore).