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PayPal on Thursday reported that it had restored its online payment services after facing intermittent outages for more than five days.

PayPal, owned by eBay Inc., said its full functionality had returned to normal for all users. A day earlier, the service began to improve, though the company said delays persisted for some users.

The San Jose, Calif., company had blamed the woes on a software update conducted Friday, which left some users without the ability to access the site, their accounts, and online payment and other services.

How were users affected? Click here to read more.

PayPal and eBay executives, in a message to users posted on Thursday, said they were disappointed with the service’s performance and vowed to do better.

“First we want to apologize for the way this has impacted your buying and selling activity and, for many of you, your businesses,” they wrote.

The message was signed by Meg Whitman, eBay’s president and CEO; Matt Bannick, senior vice president of global online payments for eBay and PayPal’s general manager; and Marty Abbott, eBay’s senior vice president of technology.

“Providing outstanding service is our top priority at PayPal. Although we didn’t meet your expectations—or our own—in the past few days, we look forward to the opportunity to regain your faith in our service,” the message said.

PayPal’s outages have hurt more than online sellers and buyer. eBay also relies on it as a major form of payment for completing eBay auctions. PayPal has 50 million user accounts.

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