Microsoft has been under fire for the rollout of its antiviral software to millions of Windows users.

The virus has infected more than 1.2 million Windows XP users and infected more then 700,000 Mac users.

The virus has been spread through the use of outdated software.

Windows XP and Mac OS X have been the most common targets.

A recent report from antivirus vendor ESET said the virus was spreading across multiple computer models.

The firm said its analysis of virus samples from 10 computers in the United States showed the virus spread between 3 and 10 times.

Microsoft issued a statement on Wednesday saying that it is working with antivirus vendors and other organisations to ensure the health of the users and to ensure that the infected computers are not left unattended and unprotected.

The company said that it has deployed new antivirus tools to combat the virus.

It also says it is “working with other global partners” to improve the protection of its users.