Social media platform X and X Pro suffered outages globally early Thursday, according to Downdetector.com.

Users on X, formerly known as Twitter, were unable to view posts on the social media site with a message that said “Welcome to X!”

Users encountered loading issues on X Pro, formerly TweetDeck, with a message that said “Waiting for posts.”

Over 47,000 US users faced access issues with X and X Pro, according to Downdetector data.

Downdetector tracks outages by collating status reports from several sources including users.

The cause of the outage, which began a little after 12 am ET(0500 GMT), is not yet known, and emails to X’s communications and support teams bounced back.

Users on X, owned by billionaire Elon Musk, experienced an inability to view posts, receiving a “Welcome to X!” message. X Pro users encountered a message that said “Waiting for posts.”

The social media platform faced upheaval and uncertainty following Musk’s $44 billion acquisition, leading to layoffs, including numerous engineers responsible for fixing and preventing service outages, sources have previously told Reuters.

Users took to rival Meta’s app, Threads, to discuss the outage, citing difficulties in accessing posts, replies and profiles on X.