llama.cpp Windows build triggers Defender warning

A Windows CUDA 12.4 release of llama.cpp was blocked when llama-server was started. flagged it as Wacatac.H!ml and removed the llama-server-impl.dll file from the folder. Older releases worked normally on the same setup.

Several replies treated Wacatac.H!ml as a possible , because H!ml means heuristic detection, which is more like a warning based on patterns than proven malware. The safer advice was to upload the exact DLL to VirusTotal before running it, because a false alarm and a can look similar at first.

Key points

  • A Windows CUDA 12.4 llama.cpp release was blocked by .
  • The removed file was llama-server-impl.dll, while older releases still worked.
  • Wacatac.H!ml may be a , but it should not be ignored.
  • Checking the exact DLL in VirusTotal was suggested before running it.
  • setups can reduce , but they require more security hygiene.
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