Microsoft on Wednesday announced that it had revised its privacy policy to limit targeted advertising to users of its applications.
The company which produces Windows and popular Office software said that it will not use content of messages and documents to target advertising.
"As part of our ongoing commitment to respecting your privacy, we won't use your documents, photos or other personal files or what you say in e-mail, chat, video calls or voice mail to target advertising to you," Microsoft said in a message to users.
Internet privacy issues have put many internet companies on the back foot as revelations about US government spying have hurt trust in online platforms.
Technology giants Google, Apple, Facebook, Twitter, Yahoo and Microsoft have appealed to the US government to limit the scale of intrusion into web properties.