Nem.dll
Keep in mind that memory allocated inside a specific DLL generally must be freed by that exact same DLL to avoid memory leaks. Scenario B: An app says nem.dll is missing
Execute a full system scan using a trusted tool like Windows Defender or Malwarebytes. nem.dll
Upload the file to the free VirusTotal aggregator to check it against dozens of different antivirus engines simultaneously. Keep in mind that memory allocated inside a

