# Synctool will not start or run

## Problem

When you open Synctool V2, the application does not start and the user interface does not load.

## Cause

The correct version of the .NET Framework is not installed.

## Solution

Install .NET Framework 4.8 or higher on the Windows Server.

[Install the latest .NET Framework](https://dotnet.microsoft.com/en-us/download/dotnet-framework)

[Check which .NET versions are installed](https://learn.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed#detect-net-framework-45-and-later-versions)

Updated on 2025-11-13