Google's Gmail webmail service was unavailable for more than 90 minutes on Thursday, an outage that may have affected almost 4.8 million users.
Google first acknowledged the problem around 11 a.m. U.S. Eastern Time, and declared it resolved at 12:40 p.m., saying it had affected "less than" 1.38 percent of the Google Mail user base.
Assuming the outage hit 1.37 percent of Gmail's approximately 350 million active users, then the total number of affected users would have been about 4.79 million.
Users impacted were unable to access their Gmail accounts, according to the Google Apps Status dashboard.
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Gmail Outage Likely Hit Several Million on Thursday | PCWorld