Slack and Peloton were among the companies encountering a widespread blackout on Tuesday – the reason for which still can’t seem to be distinguished.

Down Detector, a site that tracks service outages, noticed a spike in announced issues for Slack and Amazon Web Services starting not long before 9 a.m. ET. Coding platform Github likewise seemed, by all accounts, to be having issues, as indicated by Down Detector.

For Slack, the outage affected most functions, including messages, posts, calls and notifications. Many Slack users were unable to load the platform or exchange messages.

Slack recognized ongoing issues in an announcement posted on its site. It’s as yet indistinct what caused the blackout, which Slack said had started to ease by evening.

“We’re seeing indications of progress. If it’s not too much trouble, take a stab at reloading Slack, and in the event that not a reserve reset. We’re actually observing the circumstance. We’ll affirm once this issue is completely settled,” Slack said in an update posted at 12:07 p.m. ET.

Peloton additionally recognized help interferences on its platform. “We are as of now exploring an issue with Peloton services,” an assertion from the organization said. “This might affect your capacity to take classes or access pages on the web. We apologize for any effect this might have on your exercise and like your understanding,” Peloton said in a post on its Twitter account.

Afterward, Peloton said it was “seeing widespread recuperation of Peloton services” for users.

While Down Detector showed a spike in revealed issues influencing Amazon Web Services, an AWS representative said the information was “mistaken” and the cloud platform was not encountering any trouble.

“There are no issues beginning with AWS,” the representative said.

AWS’s product dashboard showed its systems were functioning normally. Amazon’s cloud platform experienced multiple widespread outages in December.

Github still can’t seem to remark on the situation.