More than 100,000 Verizon users lost access to wireless service on Monday (September 30).

The wireless carrier said it was aware of the problem, according to a report by NBC News, marking the latest in a series of mass technical outages this year.

“We are aware of a Verizon outage impacting customers in portions of the country,” the Federal Communications Commission (FCC) wrote on its Facebook page Monday afternoon. “We are working to determine the cause and extent of these service disruptions.”

The website Down Detector had logged 104,378 outages as of Monday morning, with that number declining throughout the day.

There have been other high-profile technical outages this year, including one in July caused by a software bug at cybersecurity company CrowdStrike. This outage impacted Microsoft users around the world, affecting banks, airlines, and hospitals.

Last week, the House Homeland Security Committee held a hearing on the outage, where members questioned Adam Meyers, the company’s senior vice president, about countering adversary operations.

“The sheer magnitude of this error was alarming. … We are here today to understand what went wrong,” subcommittee Chairman Rep. Andrew Garbarino (R-N.Y.) said at the opening of the hearing.

“We need CrowdStrike to be effective and successful because its effectiveness and success are the effectiveness and success of its customers,” added ranking Rep. Eric Swalwell (D-Calif.), who noted that CrowdStrike was 17.7 % of the global cybersecurity market owns shares.

And in February, Verizon rival AT& experienced a widespread service outage that affected several cities, including New York, Chicago, Dallas, Miami, Atlanta and Houston. The FCC later released a report criticizing AT&T’s role and response to the outage, which blocked 92 million calls, including more than 25,000 attempts to dial 911.

Like the Crowdstrike outage, this one was caused by a botched update related to a network expansion. That’s why, PYMNTS wrote in July, “in today’s interconnected world, where digital disruptions are unfortunately becoming increasingly common, the ability to learn from and adapt to these challenges is critical to long-term business success.”

Meanwhile, Verizon announced earlier this month that it was buying Frontier, the largest pure-play fiber-optic Internet provider in the U.S., in an all-cash transaction valued at $20 billion.

The deal, PYMNTS wrote, bodes well for the future of connectivity – and therefore the connected economy.

“With the rise of 5G and even 6G, increasing reliance on fiber and the ongoing shift to digital lifestyles, this acquisition speaks volumes about the future of connectivity and the strategic maneuvers major companies are making to thrive in a rapidly evolving world to position the landscape,” the report says.