Click "Update now" to download Windows10Upgrade9252.exe (or a similar name).
Search for "2022-xx Cumulative Update for Windows 10 Version 21H2" (choose the latest month before support ended). windows 10 21h2 update download offline
Once finished, you can mount the ISO (double-click) and run setup.exe for an in-place upgrade. Method 2: Direct Offline Installer (Update Assistant – .exe for a single PC) This method downloads a standalone installer that works without an active internet connection after download. Click "Update now" to download Windows10Upgrade9252