The most reliable fix is often to bypass the problematic online installer by downloading the full standalone driver package directly from the Official Epson Support Site Microsoft Learn
If you see this file on your system:
: Malicious code designed to gain unauthorized access to your system. Legacy/Niche Utility cesu4650.exe
While not every antivirus engine may flag it (due to the constantly changing nature of random filenames), heuristics often classify this file as a or Adware . Because it lacks a valid digital signature from a trusted publisher (like Microsoft, Google, or Adobe), SmartScreen filters should theoretically block it from running. The most reliable fix is often to bypass
If you find this file on your system, treat it as a high-risk threat: If you find this file on your system,
Restart your PC in Safe Mode with Networking to prevent the process from launching automatically.
, particularly for models in the EcoTank series (like the L3250).