Users on Elon Musk’s social media platform X were not able to share or post links to the encrypted messaging app Signal on Monday and were greeted with various failure notifications when they tried to do so.

Beginning Sunday, multiple users posted on X that they received error messages when they tried to post any links with the “Signal.me” domain, which is typically used to share one’s Signal profile and allow others to contact them on the messaging platform.

When users tried to post a Signal.me link, X provided a message: “Something went wrong, but don’t fret — let’s give it another shot.” Upon trying to post it again, the same error message pops up.

As of 1 p.m. EST Monday, the links were not working when tested by The Hill.

Users were also not able to send the Signal.me link through direct messaging, with an error message appearing that suggested the request “might be automated.”

“To protect our users from spam and other malicious activity, we can’t complete this action right now. Please try again later,” stated the error message received by The Hill when testing the function.

It is unclear whether this was an intentional block of the domain. The Hill reached out to X and Signal for comment on the issue, which was first reported by the blog Disruptionist.

Disruptionist noted other Signal links like Signal.org, which has information about the app, did not appear to be blocked.

Signal offers end-to-end encryption and is often used by journalists to speak securely with sources and whistleblowers.

Reporters looking for information on President Trump’s so-called Department of Government Efficiency (DOGE) efforts at federal agencies have repeatedly offered their contact information on Signal in recent weeks to speak with impacted employees.

Musk, the tech billionaire owner of X, was tapped by Trump to lead DOGE, which has rolled out a series of moves in recent weeks to cut the federal workforce and spending.

The issue with Signal links quickly sparked concerns from some users that the platform is intentionally blocking the links to suppress leaks by federal workers from reaching the press.