Microsoft sometimes hides the full offline installer. If you only see the small bootstrapper, use the following direct link (valid as of publishing): https://download.microsoft.com/download/2/0/E/20E90413-712F-438C-988E-FDAA79A8AC3D/dotnetfx35.exe
This is the most common
The deployment image servicing and management (DISM) tool will show a progress bar. The process typically takes 2–5 minutes. Do not close the window prematurely. Microsoft sometimes hides the full offline installer
| Error Code | Meaning | Solution | |------------|---------|----------| | 0x800F0906 | Windows couldn’t download source files | Use the DISM method (Method 2) with a local ISO | | 0x800F081F | Source files not found | Verify your mounted ISO matches your Windows 10 edition (Home/Pro) | | 0x800F0907 | Group Policy blocking installation | Run DISM with /limitaccess ; or contact IT admin | | 0x80070005 | Access denied | Re-run as Administrator | | 0x80070570 | Corrupt download | Delete dotnetfx35.exe , clear browser cache, download again from Microsoft | Do not close the window prematurely
Copy and paste the following command, replacing D: with your actual drive letter: DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs clear browser cache