Net Framework 3.5 Sp1 Offline Installer Jun 2026

This article will dive deep into what this framework is, why you need the offline version, how to acquire it safely, and step-by-step instructions for installation even on the most stubborn systems (including Windows 10 and 11).

If you manage multiple offline PCs, create a reusable toolkit:

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DISM cannot find the sxs folder. Fix: Double-check your drive letter. If you extracted the ISO instead of mounting it, ensure the path points to the extracted folder (e.g., C:\WinISO\sources\sxs ). This article will dive deep into what this

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs

Once finished, a system reboot is recommended to finalize the registration of DLLs. DISM cannot find the sxs folder

https://download.microsoft.com/download/2/0/E/20E90413-712F-438C-988E-FDAA79A8AC3D/dotnetfx35.exe