Both the voting rights advocates seeking the extension and the Virginia state officials they sued agreed that more time should be granted. The deadline to register to vote is now 11:59 p.m. on Thursday, Oct. 15. It includes both online and in-person registration.

"We are 21 days away from the most important election of our lifetimes, and I want to make sure that every Virginian who wants to vote has the opportunity to do so,” Virginia Attorney General Mark Herring said in a statement.

No objections to the extension were raised in court or from lawmakers, Republicans or Democrat, in the nearby statehouse.

The Lawyers’ Committee for Civil Rights Under Law had sought the extension, saying voters would be “absolutely disenfranchised” without it. The group also said that Virginia should make “a significant effort” to tell the public about the change.

Committee President Kristen Clarke said she expects tens of thousands of people to register to vote during the extension period. In 2016, after last-minute computer glitches also prompted a judge to grant an extension, more than 25,000 people registered to vote during a 36-hour extension.

“What’s key will be the state taking adequate steps to notify the public,” Clarke said.

An attorney for the state Department of Elections said the department will issue advisories to voter registrars around the state, send out press releases and publicize the extension on social media.

Voting advocates said the accident couldn’t have come at a worse time. Many people wait until the the day of the deadline to register, particularly after being reminded on social media and in the news.

State officials said a 10-gigabit optical fiber circuit was inadvertently cut during a Chesterfield County roadside utilities project. Virginia Gov. Ralph Northam said the state lacked a backup plan for this particular cable, showing the need for continued efforts to create a secure network.

Secretary of Administration Keyanna Conner said the circuit was installed this spring to handle increased web demand during the coronavirus pandemic. She said backup circuits aren’t as large as the main circuit, but plans are in place to upgrade them.

Northam, a Democrat, supported the extension, and said it appeared that only the courts could change the state's voter registration deadline.

This isn’t the first time technical problems affected Virginians’ ability to register to vote under a looming deadline.

In 2016, an unknown number of people were not able to register because of computer glitches amid unprecedented demand spurred by social media reminders. A voter advocacy group, the New Virginia Majority Education Fund, sued for an extension, and a federal judge granted one.