Reliable sources had told IANS last month that a deal may close soon once the due regulatory processes are met. The size of the deal could not be ascertained at that time.
Microsoft Corporation had earlier blamed Chinese spies for the Microsoft Exchange attack that compromised tens of thousands of computers around the world.
It's the first time in two decades that Microsoft's chairman will also be its CEO, after the software giant's co-founder Bill Gates originally stepped down as CEO in 2000.
The Journal reported that Gates resigned before the board's investigation was finished, citing another person familiar with the matter.