How to Determine Which .NET Framework Versions Are Installed

To find .NET Framework versions by viewing the registry

1. On the Start menu, choose Run.

2. In the Open box, enter regedit.exe.

   You must have administrative credentials to run regedit.exe.

3. In the Registry Editor, open the following subkey:

   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

   The installed versions are listed under the NDP subkey. The version number is stored in the Version entry. For the .NET Framework 4 the Version entry is under the Client or Full subkey (under NDP), or under both subkeys.

   Note
   The "NET Framework Setup" folder in the registry does not begin with a period.

To find .NET Framework versions by viewing the registry (.NET Framework 4.5 and later)

1.On the Start menu, choose Run.

2.In the Open box, enter regedit.exe.

You must have administrative credentials to run regedit.exe.

3.In the Registry Editor, open the following subkey:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full

Note that the path to the Full subkey includes the subkey Net Framework rather than .NET Framework.

Note
If the Full subkey is not present, then you do not have the .NET Framework 4.5 or later installed.

Check for a DWORD value named Release. The existence of the Release DWORD indicates that the .NET Framework 4.5 or newer has been installed on that computer.

The value of the Release DWORD indicates which version of the .NET Framework is installed.