The European Commissioner for Competition, Joaquin Almunia, is expected to rule that the acquisition won't harm competition or turn Skype into a Microsoft-exclusive platform.
The decision ignores accusations that Microsoft is simply bundling services on Windows to drown out smaller competitors, as argued by Italian Skype rival Messagenet last week. Messagenet also urged the Commission to require Microsoft to unbundle Skype from its Windows Office Suite.
The FT reports that Microsoft "promised" the Commission it would keep Skype interoperable and supported on rival operating systems.
"We're committed to the Skype user base," said Microsoft CEO Steve Ballmer back in May, addressing antitrust concerns at the time. "We want to continue to build and engage that base. Part of that commitment is continuing to support Skype on non-Microsoft platforms."