Unity 5 Freezes while building?

thank you. this solution worked for me as well. my build froze for about 45 minutes before i cancelled. did not see anything i could understand in the log files. turning off this lighting worked.

Worked for me too

For me it worked too. Thanks..... But now I have nearly no sunlight :-( Last edit. I turned the lighting on again and now it doesn´t freeze I and have light!!

Im using.unity 5.3 i dont seem to have this button, i have a checkbox with the word auto next to it. Didnt fix the problem though

I'm having the same issue, however it doesn't appear to have anything to do with baked maps or lighting in general.

And it does entirely freeze (related to arguments in other posts). I left it for 20 minutes, did some modeling, came back and it was still frozen. The thread says it's not responding and I'm unable to cancel the build. If I kill the process tree then relaunch unity and build it'll make it through.

For whatever reason if I build this scene for the first time after opening it, it freezes during building assets for scene 0. It's a new scene without any baked data. I have 40 some scenes across 3 different projects and this is the only one to behave as such.

This saved me big time, thanks for the post Arch_Warlock!

Thanks for the tip! It indeed was a real struggle for hours to try and fix this... deleting the Library folder was the solution. Thanks!

I left mine go at 100% cpu for 27 hours before I quit it. Usually compiles in 5 minutes. No baking. No lighting etc enabled...

This was the only thing that worked 100% for me. Thank you for sharing your library deletion method!

I love you so much for this tip, it saved me!

Has nothing to do with the trees. If you close Unity and then re-open it the "problem" will be back. See my answer below.

But after I did this it builds quickly the first time.

Well ,I have no trees in my scene and it happens to me every time I build for the first time.

Even in January 2019, this still applies, fixed my project after hours of trying to fix! Thank you! FYI: I deleted branches, then re-imported them.

Same exact problem. This worked for me. Thanks!

that and deleting the library folder and opening the temp folder and deleting the lock file several times and turning of autogen lighting and switch to GLES3.0

and I am not really sure what actually fixed it but thanks everybody do it all seemed to work.

I just had that same problem with freezing when building and instead of deleting GraphicSetting I looked in Edit -> Project Settings -> Graphics window. There was a missing shader in the list of Always included shaders. I removed that shader and then I could build. The porject was one that had been updated from earlier versions of Unity.