CrowdStrike says more than 97% of Windows sensors are back online

CrowdStrike said that nearly all Microsoft Windows sensors are operational again after a faulty update by the cybersecurity company crippled computer systems across the world. 

More than 97% of Windows sensors were online as of Wednesday evening, CrowdStrike said in an update posted on its website. The systems are nearly fully restored after the company's July 19 software update crashed millions of Windows-based devices and froze corporate networks.

Microsoft estimates the error took down 8.5 million Windows devices. The snafu will cost Fortune 500 companies more than $5 billion in losses, according to an estimate from Parametrix, an insurance services company.