Around 2 p.m., over 15,000 users reported outages across Microsoft 365, Outlook and Teams. In a social media post, Microsoft said it was investigating.

The dilemma for millions of Windows users now is that Microsoft also warns that “while you might choose ultimately to uninstall a security update, you should know the risks associated with the uninstallation.” These include vulnerability to attacks, compromised personal information and potential data loss, Microsoft says.

Some Microsoft 365 services are still down, with users reporting they're unable to access Outlook and Teams. Microsoft 365 suffered a major outage on Thursday, leaving some users unable to send or receive emails. That's obviously not ideal in the middle of a workday.