How to Install .NET Framework Offline Using DISM Command
Many Windows users face errors while installing .NET Framework 3.5, such as 0x800F081F, “source files could not be found”, or Windows Update failure. These issues are common in Windows 10 and Windows 11 systems without a stable internet connection. The best solution is installing .NET Framework offline using the DISM command.
Why Install .NET Framework Offline?
Online installation depends on Windows Update servers. If updates are blocked, corrupted, or restricted by group policy, the installation fails. Using DISM with an offline source installs .NET Framework directly from Windows ISO files, making it fast and reliable.
Requirements
- Windows 10 or Windows 11
- Official Windows ISO (same version & language)
- Administrator access
Step-by-Step: Install .NET Framework Using DISM
- Download the official Windows ISO from Microsoft
- Right-click the ISO and select Mount
- Note the drive letter (example: D:)
- Open Command Prompt as Administrator
DISM Command
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:D:\sources\sxs
Note: Replace D: with your actual mounted ISO drive letter.
Common Errors and Fixes
Error 0x800F081F: Occurs when ISO version does not match your OS. Download the correct build.
Source Files Not Found: Verify the sources\sxs folder exists in the ISO.
Verify Installation
Press Windows + R, type optionalfeatures, and ensure .NET Framework 3.5 is enabled.
Conclusion
Installing .NET Framework offline using the DISM command is the most effective method to fix Windows installation errors. This approach is safe, official, and widely used by IT professionals. It saves time and works even when Windows Update fails.
Post a Comment