Microsoft 365 users have been left unable to access their emails after a service outage.
Almost 9,000 reports had been received by 9.15pm, with the issue particularly affecting users in London and Manchester, according to the website.
A number of services appear to have been affected including Microsoft 365, Microsoft Teams, Microsoft Exchange and Microsoft Store.
People have taken to social media to express their frustration at the outage, with one person saying: “So I’m guessing Microsoft Outlook is having issues, everyone around me has just been logged out of their emails.”
Another person asked: “Microsoft how long will this Outlook outage last?”
Another person said: “Issues might be slightly varied - for me the Outlook online website and the android Outlook app still work fine, but 3rd party mail clients like Gmail have disconnected me from exchange online. Sounds like someone at Microsoft pressed the wrong button.”
“If anyone is panicking about Microsoft 365, specifically Outlook being down, do not worry. It is not just you,” said another.
Microsoft has said it is investigating an issue that has left users unable to access Outlook features and services.
The tech giant said in a post on X: "We're investigating an issue in which users may be unable to access Outlook features and services."
In a follow-up post shortly afterwards, it added: "We're reviewing available telemetry and customer-provided logs to understand the impact.
"We've confirmed this issue is impacting various Microsoft 365 services."
Microsoft also suffered an outage affecting its emails and Teams collaboration app in November.