Despite best efforts, you may hit snags. Here are solutions to frequent problems:

The Sony VGP-BMS33 is a standard Bluetooth mouse (HID profile).
It does not require a proprietary Sony driver for basic functionality (pointer, clicks, scroll).
Windows, macOS, and Linux have built-in Bluetooth HID drivers.

If you see driver requests, they usually relate to your Bluetooth adapter (not the mouse).

Solution: The driver checks for Sony Vaio BIOS strings. If you’re using a non-Vaio PC, the installer will block you. Workaround: Extract the driver files (using 7-Zip on the .exe). Then manually update the driver via Device Manager, pointing to the .INF file.

This guide helps you find, install, and troubleshoot drivers for the Sony Vaio Bluetooth Laser Mouse VGP‑BMS33 on Windows laptops. It covers driver sources, step-by-step installation, pairing, and fixes for common issues.

The driver was designed for Windows Vista and Windows 7. Sony never released official Windows 8, 8.1, or 10 drivers for this mouse. Moreover, the driver relies on the Sony Common Utility DLL and Vaio Event Service to map button presses. On a fresh install of Windows 10, these background services are missing.

The mouse has two side buttons (forward/back).
For remapping those buttons on old Windows (Vista/7), Sony provided a utility:

Driver name: Sony VGP-BMS33 Mouse Driver Utility
Purpose: Assign keystrokes or functions to side buttons (not required for normal use).

Download source (if needed):

On Windows 10/11, the side buttons work as standard X1/X2 buttons (browser back/forward) without any driver.

A. Try automatic (recommended)

B. Use Device Manager if automatic fails

C. Manual driver from Sony or adapter vendor