According to Down Detector, the problems started at around 15:14 GMT, and are affecting users around the world. 

In the UK, more than 19,000 problems have been logged, while almost 75,000 issues have been logged in the US. 

Of those who reported problems in the UK, 58 per cent said the issue was with the app, while 34 per cent said they were struggling with the website. 

The remaining seven per cent said the problem was with their feed/timeline. 

The Daily Mail tried to access the X website, but received an error message reading 'connection timed out'. 

The X iPhone app also would not load, with the dreaded 'spinning wheel of death' appearing on screen.  

While the reason for the outage remains unclear, it may be linked to scheduled maintenance by Cloudflare – the network upon which X runs. 

Cloudflare's status page explains that scheduled maintenance is 'currently in progress' in St Louis. 

'We will provide updates as necessary,' it added. 

With X down, many users have flocked to Meta's rival app, Threads, to discuss the outage. 

'X is down again,' one user posted, alongside the eye–rolling emoji. 

Another added: 'Surprise, surprise..X (Twitter) is down again. Threads is far superior.'

And one joked: 'Twitter is down guys. So, this is where we hang when Twitter is down? Or am I in the wrong social network?'

The outage comes just over a month after Cloudflare had two blackouts within weeks. 

On 5 December, Cloudflare experienced a massive outage, knocking dozens of major websites offline. 

Among those affected were Zoom, Canva, Discord, LinkedIn, Deliveroo, Substack, Shopify, Coinbase and Vinted. 

On Reddit, one user posted: 'Here we go again, it's down!'

Someone relied: 'Business haulted. Second time in a month. It's too much for service as crucial as this. Something needs to be done.' 

While a third said: 'imagine how much money businesses are losing.' 

It marked the second outage in less than a month for Cloudflare, which powers internet requests for millions of websites. 

Shortly after, Cloudflare admitted in a blog post that its network began 'experiencing significant failures to deliver core network traffic'. 

The Silicon Valley company is the foundation of an estimated fifth of all websites worldwide. 

Richard Ford, chief technical officer at Integrity360, said Friday's episode underlines how much of the internet now depends on a handful of infrastructure providers.