(CNN) Former Vice President Joe Biden's first "virtual town hall" was a technical calamity as his campaign confronts the same challenges of unexpected remote work that millions of Americans are facing as a result of the coronavirus pandemic.

His campaign wanted those who attended to be able to ask him questions, so it added an extra layer of complication to the tried-and-true method of broadcasting onto Facebook Live. Those who signed up to participate could dial in on their phones or stream a video on Zoom, a business videoconferencing app. Then the Zoom feed would also be broadcast on Facebook Live to the entire social media world.

None of it went as planned.

Technical glitch after technical glitch showed the challenges facing campaigns as they look for ways to reach voters without being able to invite them to rallies or knock on their doors.

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