Regulators did not attach any conditions to the deal, saying it was unlikely to harm competition. But both agencies said Google's use of standard-essential patents could raise concerns.
In a statement, Microsoft encouraged regulators to keep a close watch on its competitor.
Netflix acknowledged on Friday it paid $9 million to settle a lawsuit alleging it violated video privacy laws.
Apple announced Monday that an outside labor-rights group will evaluate working conditions at its Chinese factories.
Rep. John Conyers Jr. (D-Mich.) urged Federal Communications Commission (FCC) Chairman Julius Genachowski to move forward with his agency's review of controversial wireless start-up LightSquared.