(Reuters) – Microsoft Corp’s productivity software suite stopped working for more than 16,000 users on Thursday, outage tracking website DownDetector.com said.
This comes nearly two months after a flawed software update from cybersecurity services company CrowdStrike (NASDAQ: ) affected nearly 8.5 million Windows devices, crippling operations across industries ranging from airlines and banking to healthcare.
“We are investigating an issue where users may not be able to access multiple Microsoft (NASDAQ:) 365 services,” the Windows parent company said in a post on X.
Microsoft did not immediately respond to inquiries about the nature and cause of the outage and when it expects to recover, but the Azure cloud platform said on Twitter it was investigating customer reports of a potential issue connecting Microsoft services to AT&T (NYSE:) networks.
The telecom operator did not immediately respond to a request for comment.
After incident reports peaked at around 23,000 for Microsoft 365, there were signs of the issues subsiding. Some users on social media said that Microsoft services are now up and running.
About 4,000 users reported issues with AT&T services, and more than 16,500 users said they had trouble accessing Microsoft 365 products, as of 9:12 a.m. ET, according to Downdetector, which tracks outages by collecting status reports from a number of sources, including errors submitted by users on its platform.