"There is no silver bullet that will stop terrorist use of the Internet," Microsoft's vice president Steven Crown told a special Security Council debate on counter-terrorism.
It was the first time an IT company addressed the Security Council, which has been increasingly concerned by the use of the Internet and social media by jihadists such as the Islamic State group.
Crown said the challenge posed by terrorism on the web was daunting but that the industry was willing to discuss ways to counter "misuse of our technologies to spread violence, to destroy and to kill."
During the 15 minutes that followed the Paris attacks in November, there were 7,500 tweets and within two weeks, one million views of videos on the Internet praising the attacks, he said.
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"This was true of fire -- think of arson - of gunpowder, of the printing press and it is also true of our information technology products and platforms."
The Microsoft official likened the new cooperation in the diverse sector to the joint effort to combat child pornography on the Internet.
"Microsoft services and Microsoft the company are different from Google, which is different from Facebook, which is different from Twitter," he said.
"We compete fiercely at times, incredibly fiercely, but we have come together when our platforms are misused."
He suggested that steps could be taken to make it easier for governments to report to companies any misuse of the Internet and to help them with investigations.