Microsoft said on Monday it was dealing with the delay after it determined the cause of the major outages for Outlook and Teams, and implemented a fix to the problem.
As of noon ET Monday, the outage-tracking site Downdetector showed more than 5,000 problems reported by users, although this data does not fully reflect the size of the outage.
“We started to deliver the solution that is currently happening through the affected areas. It is still in progress, we are starting the first registration on the part of the machines in the unhealthy state,” the company said on X earlier in the day.
By midday, the company said the fix had reached “nearly 98% of affected areas,” but Downdetector reports continued to increase. It may take some time for the updates to work their way to customer systems.
However, Microsoft later noted that the restart was “slightly more advanced than expected for many of the affected users” and has not yet given an estimated time for a fix. At 2 pm, the company said it was still facing delays in its recovery.
The outage has disrupted many office workers – although some US users on X celebrated a short holiday ahead of the Thanksgiving weekend.
Tech outbreaks have had a devastating effect on the world this year, although Microsoft’s case is not widespread in comparison. In what has been called the biggest IT blackout in history, CrowdStrike’s software issue over the summer grounded airline traffic, disrupted hospitals and cost Fortune 500 companies more than $5 billion in direct losses.
This is a developing story. It will be updated.
For more CNN news and newsletters, create an account at CNN.com