Are you seeing this error on a or a USB dongle ?
If the installer fails, try extracting the files using 7-Zip, then in Device Manager, choose Update Driver -> Browse my computer -> Let me pick from a list -> Have Disk and point to the .inf file in the extracted folder.
Because the BCM2045A0 is OEM-specific, the safest drivers come from your laptop manufacturer, even if you have a generic motherboard.
If Windows Update fails, you can force the installation using a built-in driver library. bcm2045a0 driver windows 11
: Microsoft removed some Broadcom drivers from Windows 11’s core image. If you don’t see it here, proceed to manual methods.
Are you running a processor or an ARM-based device? Share public link
like Double Driver to save the working BCM2045A0 drivers to an external drive. Are you seeing this error on a or a USB dongle
Third-party repositories like DriverIdentifier host specific versions for various hardware IDs. Common Hardware IDs for BCM2045A0
How do you know if your system is affected? Look for these symptoms:
If you are seeing this device with a yellow warning icon, follow these steps to resolve the driver deficiency: If Windows Update fails, you can force the
The Bluetooth firmware embedded in the chip needs a specific companion file ( .hex or .bin ) loaded by the driver to operate, which might be missing.
If local methods fail, download the official legacy driver package from Microsoft. Open your web browser. Go to the website. Search for Broadcom Bluetooth BCM2045A0 .
Windows 11 often includes Broadcom Bluetooth drivers as optional updates. Here’s how to check:
: Windows 11 knows the hardware is plugged in, but it lacks the software blueprint (the driver) to operate it.