Solution: This is almost always due to missing Vaio Event Service. Manually install VESMgr.exe and VESMgrSub.exe from an old Vaio driver pack. Alternatively, use third-party software like X-Mouse Button Control to manually map buttons to functions (e.g., forward/back in browsers).
Follow this process carefully. It assumes you have downloaded a compatible installer (e.g., from a Vaio Z series driver pack). Sony Vaio Bluetooth Laser Mouse Vgp-bms33 Driver
Solution: Go to Device Manager > "Mice and other pointing devices." Uninstall the generic "HID-compliant mouse." Then, right-click your PC name at the top and select "Scan for hardware changes." Immediately cancel and run the Sony installer. Solution: This is almost always due to missing
Sony officially discontinued the VGP-BMS33 driver support around 2014 after spinning off its Vaio division. The original driver was hosted on Sony’s eSupport website, but those links are now dead. The driver package is typically named: If you have an old Vaio recovery disk, install these first
The mouse driver depends on:
If you have an old Vaio recovery disk, install these first. Without them, the driver will install but buttons won’t map.