DriverCove

RTL8821A Bluetooth Driver 1.3.865.3

by RealtekWindows 1064-bitSHA-256 verified

Manufacturer
Realtek
Device
RTL8821A Bluetooth
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 hardware IDs (67)

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 10) and architecture (x64)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).