NAB digital banking services back online after midday outage

The National Australia Bank's digital banking systems including its mobile phone app are back online after suffering a series of outages at midday today.

In a video posted to Twitter, the bank's group executive of personal banking Rachel Slade apologised for the inconvenience that the outages caused.

"We're really sorry for the inconvenience this has caused you and our teams are working as hard as they can to fix things as soon as they can," Ms Slade said.

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Earlier today some customers were stuck for hours as the bank's app and internet banking systems went down just before lunchtime.

In a short message posted to social media, NAB said it was experiencing login errors with the NAB mobile banking app and desktop internet banking.

An hour later, the bank said it was able to get ATMs, NAB cards and Apple Pay up and running.

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NAB merchant terminals and NAB Trade – the bank's stock trading facility – are still unavailable.

"We're really sorry for the impact this is having," NAB tweeted.

"We know this is not how anyone wants to start their Monday and we're working to fix it as soon as possible."

READ MORE: NAB users complain as mobile banking app goes down

The bank reported that some customers have been able to access their online banking intermittently.

The crash in services left many customers feeling stranded.

"I need to transfer money as payments are coming out of one of my accounts," one customer complained online.

"You better hope I don't get a late fee for this issue."

Another reported that they were an employer who banked with NAB, and "had people screaming for their wages".