Enter the BIOS/Boot Menu (usually by pressing F12 , F2 , or Del during startup). Select the USB drive as the primary boot device. : Follow the Windows Setup prompts. Choose Custom: Install Windows only (advanced) .
Immediately install a third-party antivirus (like Bitdefender Free or Kaspersky Free) since Windows Defender is likely gutted. Also, run wuauclt to attempt Windows Update—but don't be surprised if updates are permanently disabled. Windows 10 Ultralight 22H2 19045.5198.iso
The specific build number tells a story. Windows 10 22H2 is the final feature update for Windows 10 (support ends October 14, 2025). Build 19045.5198 corresponds to the (or thereabouts). Here is why that matters: Windows 10 Ultralight 22H2 19045
Most "Ultralight" builds do not include pre-applied activation; you must provide your own valid license key. Installation Guide Choose Custom: Install Windows only (advanced)
While the specific contents of a custom ISO depend on the creator (e.g., developers like Windows X-Lite ), they generally feature:
These ISOs are created by third-party "modders," not Microsoft. Always verify the source to avoid malware.