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"Lighting needs to be rebuilt" error does not go away even after I built lights

Hello everybody! I am new to this software and I am having an issue with building the lights in my scene. The lighting needs to be rebuilt error never goes away even after I built my lights and without adding or moving enything in my scene. Also after I built lights some assets, like the walls seem to be lighten differently than the other assets in my scene. Please can enybody help me? This is my thesis project and I am so anxious because my deadline is close and I can't seem to overcome this issue! Thank you in advance. :)

Product Version: UE 4.10
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asked May 10 '16 at 04:17 PM in Using UE4

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avatar image Matthew J May 12 '16 at 08:59 PM

Hello anna2x,

To get information on why this is happening, please build your lighting again and then after it completes, open the console (With the ~ key) and type DumpUnbuiltLightInteractions. This will output some information to your output log about what lights and assets are causing these problems. If the output log isn't open, you can find it under Window > Developer Tools > Output Log.

Please copy/paste that information here, or if it tells you enough by itself, try your hand at fixing the issue.

avatar image anna2x May 13 '16 at 05:56 PM

Thank you for your immediate reply! I will try it tonight and I will let you know about the results

avatar image Shemhazal Sep 15 '17 at 06:30 AM

Give her a proper answer , I have the same problem. I'm following these tutorials https://www.youtube.com/watch?v=_zoyaVdqHQ8 when i add 400 by 300 door it said LIGHTING NEEDS TO BE REBUILT he doesn't mentioned in the tut how to solve this.

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2 answers: sort voted first

We haven't heard from you in a while, anna2x. Are you still experiencing this issue? If so, have you gotten the information from running that console command? In the meantime, I'll be marking this issue as resolved for tracking purposes. Whenever you're available, please leave a comment and the question will reopen.

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answered May 19 '16 at 02:21 PM

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Try doing save all in content browser

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answered May 13 '16 at 02:59 AM

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