MOSCOW, March 17. /TASS/. Russia’s Federal Antimonopoly Service (FAS) will consider the case against Microsoft under the complaint of Kaspersky Lab on April 21, press service of the regulator told TASS on Friday.

"On April 21," FAS said.

Russian antivirus solutions provider Kaspersky Lab filed a complaint to the anti-trust regulator saying that Microsoft had reduced the time of adaptation for anti-virus software manufacturers from 2 months to 6 days.

A spokesman with Kaspersky Lab told TASS before that Microsoft gives developers of anti-virus products just several days to make their solutions compatible with official edition of RTM-versions of Windows 10. Kaspersky Lab also plans to address to the European Commission on this issue in the near future. The company’s official said that the company "has long-standing and successful partnership" with Microsoft but a few months of negotiations did not give any results.

Microsoft said in its turn it is cooperating with FAS, Windows 10 was developed with a focus on support of continuing security of users and meets requirements of the Russian competition law, the company said.