The process of downloading the Canon PowerShot S20 Camera WIA Driver 3.9.1 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the Canon PowerShot S20 Camera WIA Driver 3.9.1 driver from the primary server - this is the manufacturer’s CANON official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the Canon PowerShot S20 Camera WIA Driver 3.9.1 diver.