Microsoft’s latest operating system active on 200 million devices

The ultimate success of Windows 10 will be judged by the take-up rate among businesses. (Reuters) Microsoft Corp’s latest operating system, Windows 10, is running on 200 million devices in what the company said was the fastest adoption rate of any of its operating systems.
Windows 10, which the company released as a free download in July, powers both personal computers and devices like phones. It replaced Windows 8, the heavily criticized system dating from 2012.
Just over two months ago,