Microsoft has settled consumer antitrust class action lawsuits pending in six US states for $200m (£117m).
With these latest settlements, the company has reached agreements in 10 states - costing £1.5bn - leaving five states with cases pending.
And, according to the software giant, similar class action lawsuits in 17 other states have been dismissed or have had class certification denied. Thirteen of those dismissals were final.
Of the 20 states that originally brought an antitrust suit against the company, only Massachusetts continues its litigation.
Microsoft added that it hopes to work constructively with the European Commission towards a positive resolution of the European Union's investigation into charges of anti-competitive behaviour.
Brad Smith, senior vice president and general counsel at Microsoft, said: "We have been working hard to put the legal conflicts of the past behind us and to concentrate on the future.
"We recognise that we need to focus not only on resolving these lawsuits, but on building more collaborative relationships with the rest of our industry and with people in government."
The company has also resolved two of four private 'competitor cases' against it: those with AOL Time Warner and Be. Cases filed by Sun Microsystems and software developer Burst.com are still pending.
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