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Question by pwolf · Dec 06, 2012 at 01:04 AM · errorbeginnerunity 4mono

Unity wont launch

So last night I finally decided to start learning to use unity, I downloaded unity 4 free and started following some beginner tutorials. However, this evening when I tried to launch unity, it failed to do so and returned the following error; / Unable to load mono library from "C:/Program Files (x86)/Unity/Editor/Data/Mono/EmbedRuntime/mono.dll" (error = 126). / I haven't made any changes since the last time I launched, so I am confused as to what is causing it. Advice is much appreciated!

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avatar image AlucardJay · Dec 06, 2012 at 03:26 AM 0
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Is the problem with Unity or $$anonymous$$onoDevelop? You could 1/ reinstall; 2/ contact support : http://unity3d.com/company/contact (Email support: support@unity3d.com)

avatar image LukaKotar · Dec 06, 2012 at 04:52 AM 0
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Try reinstalling Unity. The error says it cannot read the 'mono.dll' file inside the editor's directory.

avatar image IndieForger · Jan 10, 2013 at 02:10 PM 0
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Yeah. Same for me. It crashes quite often. I just wrote post. Tried to dig into it but now luck so far. I would like to know why this error occurs. Is it anything that we do wrong? Or is it simply internal issue?

avatar image DevBrandon · Feb 07, 2013 at 08:52 PM 0
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this probably wont help but the same thing happened to me with unity 4.0.1 I re-installed it

avatar image shilpasarvaiya · Mar 20, 2013 at 02:06 AM 0
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I installed Unity Pro 4.1 yesterday itself...but I too face the same problem. It says, "Failed to load mono". Guess, after reading the post and replies above, I will have to re-install it...,I installed Unity Pro yesterday itself...but I too face the same problem. It says, "Failed to load mono". Guess, after reading the post and replies above, I will have to re-install it...

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Answer by alienwoods · Jun 30, 2013 at 08:44 AM

Hi,

I had the same problem u have to re install the C:/Program Files (x86)/Unity/* folder, because more files are missing, not just the file in the error.

Keeping an already installed unity in a zip can also saves time to fix this problem.

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