A global tech outage that was related to a software update by cybersecurity firm CrowdStrike (CRWD.O), opens new tab affected nearly 8.5 million Microsoft (MSFT.O), opens new tab devices, Microsoft said in a blog post on Saturday.

"We currently estimate that CrowdStrike's update affected 8.5 million Windows devices, or less than one percent of all Windows machines," it said in the blog. A software update by global cyber security firm CrowdStrike, one of the biggest operators in the industry, triggered system problems that grounded flights, forced broadcasters off the air and left customers without access to services such as healthcare or banking.

"While the percentage was small, the broad economic and societal impacts reflect the use of CrowdStrike by businesses that operate many critical services," Microsoft said in its blog post. Microsoft said CrowdStrike helped develop a solution that will help speed up remediation of Microsoft's Azure infrastructure, adding that it is working with Amazon Web Services and Google Cloud Platform to share information about the impact Microsoft is looking at across the industry.