Banking giant Lloyds has apologised after customers were locked out of their accounts and were unable to access online services.
The high street lender did not specify the number of customers affected but said services for majority of its customers and for its Halifax and Bank of Scotland units were not affected.
Which customers are affected online?
Lloyds said the issue only affects customers accessing their accounts online via desktops and that customers were still able to log in to mobile and tablet apps.
However, several customers have taken to social media to vent their frustrations at the bank for being unable to log in through their mobile phones.
One Twitter user said: "I still cannot log in to online banking app. My internet is perfectly fine. I need to check my balance and other things."
Another Twitter user was aggrieved by the bank’s apology.
"ETA when online banking will be up and running? Apologies are pretty useless to those trying to sort payments."
IT outages have regularly hobbled UK banks, notably TSB last year following its botched migration, while others such as HSBC and Royal Bank of Scotland have also struggled with glitches.
How have Lloyds responded?
A Lloyds spokeswoman said: "We are currently aware that some customers may be experiencing intermittent issues when trying to access their online banking service this morning.
"We are working to resolve the issue as a matter of urgency and we are sorry for any inconvenience for our customers."