China's anti-monopoly agency has announced an investigation of Microsoft Corp., stepping up pressure on foreign technology companies.
The agency said Tuesday it opened a case in June after complaints that Microsoft violated an anti-monopoly law by failing to publish all documentation related to its Windows operating system and Office software.
The agency said a preliminary examination failed to resolve the issue so regulators launched a formal investigation.
Foreign technology suppliers face growing pressure from Chinese regulators, who have launched anti-monopoly investigations and announced plans to examine their products for security flaws.
In a separate case, state media said last week that regulators have concluded Qualcomm Inc., a U.S.-based maker of chip sets for cellphones, has a monopoly but gave no indication what remedies they might demand.