Realtek Ethernet Diagnostic Utility 2.0.7.3 [exclusive] -

Version 2.0.7.3 was released to address the evolving architecture of the Windows ecosystem. As Microsoft pushed major updates like Windows 10 (versions 2004, 20H2, etc.) and early iterations of Windows 11, older diagnostic utilities (such as the 2.0.6.x series) often failed to launch or crashed when attempting to read hardware registers.

If you are experiencing random disconnects, low speeds, or "Network cable unplugged" errors, follow this protocol. Realtek Ethernet Diagnostic Utility 2.0.7.3