 Stocks opened lower and turned mixed after a massive global outage of Microsoft devices caused by a glitch in an update from cybersecurity company CrowdStrike. CrowdStrike says the issue's been fixed, though there is a residual impact. Microsoft shares opened down more than 1%. CrowdStrike shares are down 14%. Netflix shares are up 5%. It expects growth to be lower in the current quarter, though it added more subscribers, 8 million.