: If you know which game or tool uses it, reinstalling that application is the safest way to repair a corrupted or missing version.
: Right-click the file, select Properties , and look at the Details tab. Check the "Original Filename" or "Product Name" to see which program it belongs to. pastemortal_3DE90000.dll
: If the file appeared unexpectedly in your System32 or AppData folders, run a deep scan with Windows Defender or Malwarebytes . : If you know which game or tool