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.

Microsoft said on Friday it has restored access to its suite of productivity software, while data from outage tracking website Downdetector.com showed that reports of outages had declined.

Microsoft admits that “Classic Outlook profiles with POP accounts and PSTs hang after Windows updates on January 13, 2026.” If you’re affected, you need to await a fix. “The Windows Team will be documenting fix guidance. We will update this topic with a link to the Windows guidance as soon as it is available.​​​​​​​”

You can spend money on third-party PC optimization tools to improve performance, but Microsoft PC Manager claims to deliver the same benefits for free. I put it to the test.

Tiger Global and Microsoft are offering up their full stakes in the company, while Walmart is choosing to retain its majority stake and selling up to 45.9 million shares.