You now have 30 days, Microsoft has just warned 600 million Windows users, before you lose “protections from the latest security threats.” This deadline has been coming for some time, but now it’s almost here. Don’t leave it too late.

We’re talking Windows 10 and the impending end-of-life for the most popular version of Microsoft’s ubiquitous operating system. The deadline date is October 14. Microsoft has confirmed October’s security update a week or so before that will be the last.

“As always,” Microsoft says “we recommend that you update your devices to the latest version of Windows 11.” For half or more of the 600 million users still on Windows 10, that might be possible. But hundreds of millions of Windows users can’t upgrade. Their PCs don’t have the prerequisite hardware to meet the Windows 11 upgrade test.