JPMorgan’s Chase Website Falters After Attempted Weekend Upgrade

JPMorgan Chase & Co., the largest U.S. bank, is working to restore full service to its 17.3 million online users after a weekend upgrade caused problems with its consumer website.

“Customers have not been able to access Chase.com at times today because of some systems changes we made over the weekend,” said Kristin Lemkau, a spokeswoman for the New York-based company. “We are working to restore access as quickly as possible.”

JPMorgan refunded late fees and waived other charges after its consumer website failed multiple times over several days in late 2010.