WASHINGTON (CNN) –

If only this was just a Halloween trick.

Visitors trying to log on to the Obamacare website early Thursday morning saw the same stubborn phrase that has roiled users for weeks: “The system is down at the moment.”

It’s been almost a full month since the HealthCare.gov website launched, riddled with technical problems despite a series of advance warning signs. And even after a chorus of apologies out of Washington, it may be another month before everything’s running smoothly.

Vice President Joe Biden became the highest-ranking administration official to apologize Wednesday for the botched rollout.

“We assumed that it was up and ready to run,” he told CNN’s sister network HLN. “But the good news is although it’s not — and we apologize for that — we are confident by the end of November it will be, and there’ll still be plenty of time for people to register and get online.”

That mea culpa came after Health and Human Services Secretary Kathleen Sebelius apologized for the “miserably frustrating” problems during a 3 1/2-hour congressional grilling. She said she made a mistake when she told President Barack Obama that HealthCare.gov was “ready to go” for its October 1 launch.

Sebelius promised a “vast majority” of consumers will have an easier time shopping online for health insurance under Obamacare by the end of November.

“In these early weeks, access to HealthCare.gov has been a miserably frustrating experience for way too many Americans, including many who have waited years, in some cases their entire lives, for the security of health insurance,” Sebelius said.

She echoed the overall administration stance — that a team of experts is scrambling to fix the website’s errors.

To the frustrated users who have had problems, she said: “You deserve better. I apologize. I’m accountable to you for fixing these problems.”

Obama tried to log on

Biden said he didn’t even bother logging on to the Obamacare site.

“Actually, the President tried to get online, and my daughter tried to get online,” he said. “I did not, because it was clear that I was not getting online.”

Obama himself acknowledged that too many people “have gotten stuck, and I am not happy about it.”

“There’s no excuse for it,” the President said. “And I take full responsibility for making sure it gets fixed ASAP.”

Glass half full?

Sebelius said the sweeping health care program has delivered on its promise to provide affordable health care coverage. Thousands have been able to access the website to look at new health coverage options that will give them security of knowing they won’t go bankrupt if they get sick, she said.

Republicans have called for Sebelius to be fired for the Obamacare problems, but a White House spokesman said Wednesday that Obama has “complete confidence” in her.

“She took responsibility for many of the problems that are evident with the (Obamacare) website, but she also deserves credit for the other aspects of the Affordable Care Act implementation that have gone well,” spokesman Josh Earnest told reporters.

In fact, Obama tried to turn the tables on Republican opponents of his signature health care reforms, challenging them to come up with helpful ideas instead of undermining the federal law.

“Anyone defending the remnants of the old, broken system — as if it was working for people — anybody who thinks we shouldn’t finish the job of making the health care system work for everybody … those folks should have to explain themselves,” he said.

According to the Kaiser Family Foundation website, 15.4 million people had individual health care coverage in 2011, representing about 5% of the population. The vast majority of Americans have coverage through their employer, Medicare, Medicaid or other public providers.

White House spokesman Jay Carney said Tuesday that “a significant portion” of the 5% of people with individual coverage will end up paying less for better policies when they shop around in the new exchanges.

Early warning signs

Some of the criticism surrounding the website’s launch has to do with what Obama and other officials knew — and when they knew it.