Users took to social-media on Wednesday to say Bloomberg’s terminal, an essential tool for trading and communicating for professional investors, wasn’t working.

An outage of Bloomberg terminals on Wednesday caused disruptions across global financial markets, halting trading activities, delaying government debt auctions, and frustrating traders who rely on the service for real-time data and analytics.

News and data company Bloomberg suffered an outage to its terminal for financial professionals on Wednesday, disrupting numerous government bond sales and customer activity, according to several European debt management offices and market sources.