Bank of America's consumer online banking service was slow for a fifth day Tuesday, and the bank still wasn't saying what the problem was.
The bank said many times starting Friday that it had resolved the problem, but visitors to its home page still saw an error message for much of Tuesday saying the site was "running slowly" and customers might experience delays or have difficulty accessing parts of it.
The message encouraged customers to try again at "a non-peak time" or visit an ATM or one of nearly 6,000 branches to get into their accounts.
Charlotte-based Bank of America Corporation is the largest U.S. bank by deposits and has 29 million online customers.
Spokeswoman Tara Burke says the website problems were not the result of hacking.
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