This is the million-dollar question. By removing Defender, Windows Update, and Firewall components, an Ultralight build is technically less secure against network worms. However, it is more secure against privacy invasions and Microsoft's cloud features.
After downloading, use PowerShell to check the hash:
Get-FileHash -Path "C:\Downloads\Windows 10 Ultralight 22H2 19045.5198.iso" -Algorithm SHA1
Compare it to the value posted by the uploader. If mismatched, delete immediately. Windows 10 Ultralight 22H2 19045.5198.iso
Version: 22H2 (OS Build 19045.5198)
Architecture: x64
Edition: Pro / Pro Workstation (Ultralight Custom)
ISO Size: ~1.8 GB (vs. ~5.5 GB stock)
Installed Size: ~6–7 GB (vs. ~20 GB stock)
RAM usage at idle: ~700–900 MB (vs. ~2.5 GB stock)
Score: 9/10 for low-resource / power-user scenarios
Not recommended for: Beginners, corporate devices, shared family PCs, or anyone needing Windows Store. This is the million-dollar question
A razor-sharp Windows 10 for those who want speed over safety and control over convenience.
This appears to be a custom, unofficial “Ultralight” Windows 10 ISO—not a release from Microsoft. Compare it to the value posted by the uploader
Important warnings:
If you want an official lightweight Windows 10: Microsoft’s own Windows 10 LTSC (Long-Term Servicing Channel) is the legitimate alternative.
Microsoft’s support team will not help you. The ISO builder may disappear, leaving you without documentation or updates.
To achieve the "Ultralite" status, the creator has stripped a significant amount of weight from the OS. Typically, this includes: