How to obtain an older version of Widevine Media Optimizer Chrome that will work fine under Windows XP?
The latest version of Widevine Media Optimizer Chrome (6.0) is compatible with Windows XP and supports Chrome, Firefox and Internet Explorer browsers. In order to obtain Widevine Media Optimizer Chrome 5.0, its first version, you need to contact Widevine Technologies. On the download page, they have only Widevine Media Optimizer Chrome 6.0 version.