The VMware vSphere Client 5.5—the classic C# Windows application—is often required for managing older ESXi hosts or vCenter environments that haven't migrated to newer web-based platforms. While it is technically deprecated, you can still install and run it on Windows 10 64-bit with a few specific adjustments. Where to Download vSphere Client 5.5 There are three primary ways to acquire the installer:

Part 4: Post-Installation Tweaks for Windows 10 64-Bit

After successfully installing, you may encounter runtime issues because vSphere Client 5.5 uses deprecated .NET Framework 3.5 and ancient WPF libraries.