Patch Gap

Microsoft · Windows

Is my Windows up to date?

(and is it safe today)

Last checked · Check before installing; only use the official link.

Today: Update needed if you are behind: 11 listed problems are being used in real attacks. Most have a full fix; see the notes below.

Last checked . The operating system on most PCs and laptops.

The minimum safe version

There is no single version number for Windows. The newest fix listed here is: Fixed by the October 13, 2026 Windows security update (or any newer update). Microsoft's Update Guide lists the exact update for each Windows version. If you have that or anything newer, you're covered against the fixed problems listed here (see the notes below).

Where this number comes from:

How to check your version

These steps only look. They do not change anything.

On Windows

Easy way: Start > Settings > Windows Update. Then click Update history to see recent updates.

Or type this in PowerShellRead-only. It only reads the version and changes nothing.

Get-CimInstance Win32_OperatingSystem | Select-Object Caption,Version,BuildNumber; Get-HotFix | Sort-Object InstalledOn -Descending | Select-Object -First 5 HotFixID,InstalledOn

How to update Windows

Windows Update installs fixes by itself, but a restart is often needed.

On Windows

  1. Open Start > Settings > Windows Update.
  2. Click Check for updates and install what it finds.
  3. Restart when asked.

Official update page Official website

Check before installing, and only use the official link. Never install an "update" from a pop-up, email or ad.

Latest problems (12)

For AI agents

This app as data, with minimum_safe_version: /products/windows.json. What changed lately: /changes.json. Read-only checks only; ask before installing anything.