![A National Australia Bank (NAB) sign. (AAP Image/Mick Tsikas) A National Australia Bank (NAB) sign. (AAP Image/Mick Tsikas)](/images/transform/v1/crop/frm/180164150/f3441e33-7485-44e5-8314-b7bb9a98272c.jpg/r0_422_8256_5082_w1200_h678_fmax.jpg)
NAB customers were unable to access internet banking services on July 1 after an Australia-wide outage impacted the bank.
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NAB said on X on July 1 it was "aware of an issue currently impacting some of our services including internet banking, mobile and desktop".
"We're sorry for any inconvenience this is causing. Our teams are working to resolve this ASAP. We will keep you updated."
Customers trying to log on to the app were confronted with a message saying "something didn't work".
"We couldn't show your accounts. Refresh the screen to reload it," the NAB message said.
Staff on NAB's social media platforms reached out to disgruntled customers and said they "can only imagine how frustrating this must be and I'm certainly keen to have a chat about the troubles you've experienced".
One affected customer on X said they were trying to make a transaction without success: "I am trying to make transaction from business account ? It sucks if you have make payment to vendor which is due."
At 4.59pm on July 1 NAB informed customers via X that mobile banking had been restored.
"We are working to resolve remaining issues with internet banking. We're sorry for any inconvenience this is causing. Thanks for your patience."
However, some customers were still encountering widespread issues with NAB's internet banking service.
NAB is yet to provide an explanation for the outage.