You need to render at least 2 passes to use the denoiser.


This warning appears if the denoising option was enabled, however not enough passes were rendered for it to work. Denoiser needs at least 2 passes to work.


Possible causes:


Solutions: 

  • Wait until at least 2 passes are rendered
  • Increase or disable the progressive rendering limits
  • Use the "resume rendering" option to render more passes