How to Check Your .NET Framework Version (All Methods Explained)

If a program refuses to install, throws a compatibility error, or your IT documentation asks for your .NET Framework version, knowing how to find it quickly is genuinely useful. The process isn't complicated — but there are several ways to do it, and the right method depends on what you're working with and how much detail you need.

What Is .NET Framework and Why Does the Version Matter?

.NET Framework is a software platform developed by Microsoft that many Windows applications rely on to run. Think of it as a shared engine that programs tap into rather than building everything from scratch themselves. Applications built on .NET need a compatible version of that framework installed on your machine to function correctly.

Microsoft has released numerous versions over the years — from 1.0 through to 4.8 — and multiple versions can coexist on a single Windows installation. A program built for .NET 3.5 won't necessarily run on 4.0 alone, which is why knowing exactly what's installed matters when troubleshooting or installing new software.

It's also worth knowing that .NET Framework (Windows-only, versions up to 4.8) is distinct from .NET (formerly .NET Core), which is cross-platform and follows a separate versioning track — 5, 6, 7, 8, and beyond. The methods below cover both, since many users encounter one or the other depending on their software stack.

Method 1: Check via the Windows Registry 🔍

This is the most reliable and complete method for checking all installed .NET Framework versions.

1. Press Windows + R, type regedit, and hit Enter
2. Navigate to: HKEY_LOCAL_MACHINESOFTWAREMicrosoftNET Framework SetupNDP
3. Expand the folder — you'll see subfolders labeled by version (e.g., v3.5, v4)
4. Click each version folder and look for a Version or Release value in the right pane

For .NET Framework 4.5 and later, the version is stored as a Release DWORD value rather than a plain version string. Microsoft publishes a mapping table linking Release numbers to specific versions (for example, a Release value of 528040 corresponds to .NET Framework 4.8 on Windows 10).

Why use this method: It shows every installed version in one place and gives you the most granular detail, including sub-versions.

Method 2: Use PowerShell (Fast and Scriptable)

PowerShell gives you a clean, readable output without navigating the registry manually.

Open PowerShell and run: