It's one of the most popular websites in the world, but it seems that Yahoo has crashed this morning.
According to DownDetector, the issues started at around 07:38 BST, and are affecting users around the world.
While the reason for the outage remains unclear, of those who reported issues, 61% said the problem was with the website, while 38% struggled to log-in.
Yahoo tweeted about the issue 40 minutes ago, writing: "You may not be able to access some of our services, including email. Our top priority right now is getting this fixed. We appreciate your patience."
Several people have taken to Twitter to vent their frustrations this morning.
One user tweeted: "Server down on day one of football season..."
Another added: "This is so annoying - and bizarre that Yahoo mail is also down - wonder if this is some sort of cyber attack on email systems?"
And one said: "'Some of our service'? Your entire network is down. You are losing your customers money...including me. Unbelievable."
Mirror Online has contacted Yahoo for comment.
