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You are running Nemesis for the first time and haven't initialized the engine files.
Alternatively, move it to a root folder on your C drive (e.g., C:\Games ). What to Do If "Update Engine" Fails You are running Nemesis for the first time
Windows Defender or third-party antivirus software has quarantined or deleted the "engine" files. You are running Nemesis for the first time
Antivirus programs often flag the file generation process of Nemesis as "suspicious behavior." You are running Nemesis for the first time
If the error persists, temporarily disable your "Real-time protection" and try the "Update Engine" button again. 3. Run as Administrator
Add your and your Mod Organizer 2/Vortex folders to your antivirus exclusion list. Specifically exclude Nemesis Unlimited Behavior Engine.exe .
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