Westpac has announced it has restored its internet banking services after a multi-day outage left many of its customers unable to access their online banking accounts.

Westpac initially reported the outage, which affected its online and mobile banking channels, on social media service X (formerly Twitter) on Monday afternoon (1:40 pm), stating that it was “aware that customers are experiencing issues accessing online and mobile banking” and that it had engaged its teams “to fix the issue”.

A follow-up message on X, issued by the bank at 3:15 pm that day, announced that the services were “restored”.

However, the outage appeared to be affecting customers (spanning the Westpac, St George and Bank SA brands) well into Wednesday, with customers reporting that they were still unable to access their online accounts this morning.

Online service outage tracker Downdetector recorded a spike in outage reports earlier today tied to the Westpac outage, with around 2,000 reports issued between 7:30 am and 8:00 am.

Since then, Downdetector has received a steady stream of around 60-90 outage reports every 15 minutes for customers attempting to access the bank’s online channels.

Westpac earlier today (following a message on Tuesday conceding that outages were continuing to affect its online banking users) issued an apology to customers for the disruption, announcing its services were now fully restored.

The bank has yet to provide a reason for the outage.

The multi-day outage saw customers unable to log in to their mobile app banking services; others reported being unable to load Westpac’s online banking website.

Westpac also confirmed outages for some EFTPOS and eCommerce services that process merchant transactions.