CHICAGO (NewsNation Now) — Thousands of users reported outages on Slack Monday morning, the first day back for most people returning from the New Year’s holiday.

The technology outage tracker Downdetector reported issues with the messaging service since 10 a.m. EST. The majority of the issues, roughly 73%, involve connecting to the service, and 25% involve sending messages. The outage disrupted service in the U.S., Germany, India, the U.K., Japan and elsewhere. At 12:30 p.m., service was still sporadic and Slack said the outage was ongoing, but that some users may begin to see improvement. Slack said that people should check https://status.slack.com for updates. Most issues were resolved by 3 p.m. on Monday afternoon.

Slack acknowledged that users are having trouble connecting or using Slack on Monday.

“Our team is currently investigating and we’re sorry for any troubles this may be causing,” Slack said in a prepared statement.

Slack said that people should check https://status.slack.com for updates.

“We’re seeing improvements with error rates on our side, and we believe affected customers should be able to access Slack,” the company said.

Users also reported outages with Google, Gmail, Microsoft Teams, Zoom and Amazon Web Services Monday morning, though at a smaller scale, according to Downdetector.

Roughly 200 users have reported issues with Google and 130 with Gmail, all involving log-in and search queries, as well as receiving messages. Google has not confirmed any outages with its services, as of 2:30 p.m. EST.

More than 120 users reported issues with Microsoft Teams, while nearly 200 reported problems with Zoom. To track those outages, visit Downdetector’s website.

The outage comes about a month after Salesforce.com said it would acquire Slack for $27.7 billion.