For the second time this month, Wells Fargo's online banking platforms, including their mobile banking app, have experienced outages across all systems, leaving customers unable to digitally access their accounts.
"We're working to restore all our services as soon as possible", said bank spokeswoman Hilary O'Byrne.
In social media posts, the company said that its system was experiencing intermittent outages and it was working to troubleshoot the issue.
The company made the announcement Thursday morning on Twitter, apologizing to customers who may be impacted.
Whether the backups failed, or the shutdown caused a cascading fault that affected other data centers and took out the rest of the bank's online presence, isn't known at this time.
Exterior of the Wells Fargo bank on November 16, 2018 in Philadelphia, Pennsylvania.
Many customers report their debit cards were declined when paying for goods and services.
Some are reminding the banking giant of the 2016 scandal when employees opened about 3.5 million bank accounts in customers names without authorization in order to meet sales goals.
Wells Fargo on Thursday blamed the technical issues on smoke, which was "detected following routine maintenance".