Repair / Reinstall .NET Framework
Applications built with .NET technologies need the correct Framework version. Windows 10/11 has it built-in but it can corrupt.
Step-by-Step
- 1
Download the .NET Framework Repair Tool from Microsoft: https://www.microsoft.com/en-us/download/details.aspx?id=30135
.NET Framework Repair ToolAuto-detects and repairs .NET issues - 2
Run NetFxRepairTool.exe. It automatically detects and repairs .NET Framework issues.
- 3
Follow the wizard. It may suggest reinstalling — allow it.
- 4
For Windows 11: also run Windows Update (Settings → Windows Update → Check for updates) to get the latest .NET 6/7/8 runtime updates.
- 5
Restart your computer.
- 6
Verify by checking "Turn Windows features on or off" — ensure .NET Framework 3.5 and 4.8 Advanced Services are checked.
How to Verify It Worked
- Open Command Prompt, run: reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full" /v Release
- A Release value >= 533320 means .NET 4.8.1+ is installed correctly.
Still Not Working?
Move to Fix #6 (SFC + DISM). Deep system corruption often breaks .NET Framework irreparably without system file repair.