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As it says in the title when I come to render my scene, the hair system just stops working and looks nothing like the material preview or viewport render.

Not really sure whats causing it, I have another patch of grass in a pot and that works fine, and I can't seem to see any difference in settings.

The only thing I could find it when I turned off children there was no hair at all, the parents didn't render. Also, when I turn on virtual parents it seems to work but with very few hairs and odd shape, so it doesn't fix the problem at all.

I am quite new to particle systems so there could be an incredibly simple fix that I am missing.

Here's the file:

What's seen when rendering

The grass in material preview

Hair settings

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  • $\begingroup$ please provide blend file $\endgroup$
    – Chris
    May 3 at 1:08
  • $\begingroup$ Are you using GPU Compute to render in Cycles? $\endgroup$
    – TheLabCat
    May 3 at 1:27
  • $\begingroup$ @Chris I've not really used blender stack exchange before, but I found blend exchange; is that how to do it. Doesn't seem to be working though, says "There was an internal error attempting to complete your request." $\endgroup$
    – TtForge
    May 3 at 10:00
  • $\begingroup$ @ZargulTheWizard yes I am $\endgroup$
    – TtForge
    May 3 at 10:00
  • $\begingroup$ @TtForge: yes, i meant blend-exchange.com. just follow instructions. for me it worked always....but...maybe your blend file is too big? $\endgroup$
    – Chris
    May 3 at 10:03
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I am stupid and had a modifier that was turned off in viewport but on for render, I for some very irritating reason didn't check until now.

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  • $\begingroup$ Happens :) Glad you were able to fix your issue. You might include a screenshot of the problematic modifier stack just in case anyone searches with the same problem. $\endgroup$ May 3 at 16:18

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