Content-Aware Fill feature is greyed-out in Photoshop

I had the same issue. If you look to right of the screen where you see your 'layer', ensure that the layer you are working with isn't locked. Once you unlock it, check and see if your content aware is freed up. It worked for me.

I found the solution. Make sure you convert your image into a layer. The button wasn't greyed out anymore. 

You've placed your image (as a smart image), now go over to layers, right click and Rasterize Layer.

pleas help photoshop content aware fill mission

Double click on the layer that the picture is on, until your picture is opened in a seperate tab. Now, if you use the crop tool, it should work (at least it did for me).

Make a selection in your image first, then choose the Fill button from the Edit menu.

You have to rasterize the layer that you want to use content-aware fill on. Just right click the layer and there is an option called "Rasterize Layer" Once you do that, the buttons shouldn't be greyed out.