The IT system used to run Barclays office receptions has failed globally, leaving administration staff without their internal contacts list.
A source at the bank who works with the IT department told Computer Weekly the system had been down for a day and a half so far, and staff were overheard complaining about the issue, with no sign of when it was due to get fixed.
Computer Weekly contacted the Barclays press office to find out more details, but the spokeswoman said she was unaware of any issues so could not comment.
So far, the problem seems not to have affected branches, only internal staff within the banking group.
Barclays has put a lot of investment into new technology in recent months, rolling out Wi-Fi in its branches and launching a new mobile application.
However, earlier this year it announced 3,700 job cuts across different divisions after reporting a substantial drop in profits – from £5.9bn in 2011 to £246m in 2012.