Zoom Video Communications Inc said it had recovered from an outage where some users were unable to join meetings on the video-conferencing platform on Wednesday.
The company's status page said all systems were operational.
Zoom said the glitch was likely due to a localized internet service issue.
The platform has seen a meteoric rise in users, thanks to remote work and online learning against the backdrop of stay-at-home orders.
Outage tracking website Downdetector.com showed nearly 2,000 incidents of people reporting issues with Zoom at its peak at 9 am ET.
Separately, telecom operator Verizon Communication Inc's internet services were also affected earlier, with nearly 5,400 users registering complaints at 10 am ET, according to Downdetector.
Verizon said it had since resolved the issue. "Earlier today there was an issue impacting internet routing for some of our customers. The issue has since been resolved,” a spokesperson for the telecom operator said.
In January, thousands of users across the US East Coast faced widespread internet outage from providers including Verizon, which disrupted services offered by Google, Amazon, Zoom, Slack and other technology firms.
Downdetector tracks outages by collating status reports from a series of sources, including user-submitted errors on its platform. The outages might be affecting a larger number of users.
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