Symptoms:
- When trying to enter Play mode, I receive the error "All compiler errors have to be fixed before entering playmode!".
Cause:
If any of the scripts in your Unity project have errors that do not allow Unity to compile the scripts, this error will be displayed. You will not be able to enter Play mode until all script errors are fixed.
You are importing assets made for different Unity versions.
You are opening a sample project on a different version of Unity than the original.
Resolution:
Any compiler error will prevent you from entering Play mode. You need to look at all errors showing in the console and fix them. Double-clicking the error in the console should show you the line of code with the issue. In most cases, you can search the error message online for related solutions.
Importing assets that contain scripts can result in the above error. Check the compatible Unity versions for the asset. The code may be outdated and no longer valid for more recent versions of Unity. In that case, you must manually fix all errors or download a more recent version of the asset.
If you're opening some of Unity's sample projects, please ensure that you open these in the original Unity version. This should prevent undesired behaviors like the error in question.
If the script is not being used, you could comment on the sections where the errors appear.
If you see the error, "All compiler errors have to be fixed before entering playmode!" on a fresh project without any changes or code, please consider updating to the most recent Unity version.
Once all scripts are free of errors, Unity can compile the scripts and enter Play mode.
More Information:
Comments
58 comments
all of my code is correct but it still keeps coming up with compiler errors but it doesnt flag any. does anyone know ho to fix this becuase my code is correct and ive been trying to figure out what is wrong with it for over a month.
Im having exactly the same problem as Kyle Katarn (Ive the 19.3.9f1 edition)
It can happened that you get your Unity Project into a corrupted state. This can happen for instance if you rename files without waiting for Unity to complete compiling, changing namespace names or having different file and class names.
If no errors show up in your console you can always try to build your project in Visual Studios under Build > Build Solution.
This helped me to find out why Unity was not compiling and allowed me to get back into play mode.
Same exact error. This worked for me:
In Unity, go to Window > Package Manager > Universal RP and update to 7.3.1
I found this solution because someone else did the opposite and downgraded from 7.3.1 to 7.1.8. So mileage may vary. For me, upgrading worked.
Yo that worked for me man thx
Rob's answer above does not work for me. The problem is with Unity 2019, install 2018 and use that instead.
Rob's answer worked for me, upgrading fixed it!
Thanks Dorin....
Link needs to be updated, though.
Is there a way to prevent the compiler from compiling if there are compiler errors? Its annoying that I'm allowed to compile but not allowed to test anyways
Hi
how to overcome this? when I import standard assets and when playing an error occurs
I just loaded up the fps microgame and i have 125 errors why did this happen
I have done completely nothing on my project and when i try and run it says all compiler errors have to be fixed error code cs 1056 Unexpected character '
I haven't written any script yet so please can someone help?
i have this problem too even though i haven't scripted at all there seems to be an error that does not let me go in play mode.
So, cause of these errors is; errors in code.
Solution is fix the code...
My cunundrum is the error is showing up in a blank set up. So why is this happening before I alter any coding or build any terrain? Am I missing somthing, I use unreal normally but I want to try unity out and maybe switch. I am a complete novist btw.
Any one who has this problem,
'Temp/UnityEngine.TestRunner.dll'
'Library/ScriptAssemblies/UnityEngine.TestRunner.dll' failed
you have 2 Trojans on your computer that are downloading bitcoin you need to dl this program https://www.malwarebytes.com/mwb-download/ run it do the free trial version, set up and scan your computer it will find the 2 Trojans then press the quarantine button, then close unity and open it, the problem is gone, the program costs $30 for the full version but it gives you a 30 day trial, I am 100% going to buy this when the trial runs out. If any one is trying to do the fps microgame tutorials and can get the play button two start because of the two errors this is the fix its them lil bloody Trojans stopping you from getting ahead in unity. hope this helps.
cheers
john.
I also having same issue in 2019 unity version , I watch some solution but in 2019 unity version if we go in project settings>player>configaration>iam not getting script running time. Please help me. If any one has solutions they will be greatly appreciated.
I don't have any errors in the console but it still won't let me play.
I just installed 2019.4.16.f1 and was able to fix the compiler error by going to Window>Package Manager>Universal RP and selecting 7.5.1 and installing it.
I'm having the exact problem, too!
problem fixed here : https://youtu.be/gHEGyCUu0F4
So... what do I have to solve if console is completely empty when I get this error?
any one who is having the problem with unity where by you open it up and even with nothing in the project, so a blank project it still says theres a compiling error when going into play mode. You might have a trojan on your pc, I had this problem I scanned my pc with malware bytes, google for link, and it found two trojans removed them, then unity let me go into play mode with no compile errors, malware has a 30 day trial, just put that on run find trojans, remove, then remove malware bytes, and open up unity and it works, the trojans are making unity think there is a compiler error when there isnt, this should work, 99% of the time its that problem.
So after I tried to build the game (for pc) these errors appeared and idk how to fix them.
Hello there,
I am sorry to see that you are getting these console errors. Unfortunately, this is not something that I can help you with directly as is a technical issue, I am sorry about that.
However, I would advise using the Unity Support Forums to get some help with your issue. You can search for posts of create your own using this link: https://forum.unity.com/.
I am sorry again that I could not directly help you with this, but hopefully our forum is useful for you.
If there is anything non-technical you need help with, please feel free to email us at support@unity3d.com or alternatively, you can submit a ticket via this web form.
Oh thank you
this does not work the microgames on the SPECIFIED version just adds 814 compiler errors
Any one who's having this problem, I was having the same problem after seeing in another forum some one said they had this problem and after running a anti malware program it remove two trojans that was causing the problem, when they opened unity they could then compile there project even in an empty one, I did the same thing and it worked, I used malware bytes, you get a free trial just down load install, run, remove trojans, then when the trial runs out just remove it in add and remove then re install again and you get a new 30 day trial, I had this problem for about a year or two, and that solved it, I guarantee if you do this it will work 99% of the time. I put this message in before and got accused of promoting malware bytes, but use any one you want its just that one lets you re install and get a new 30 days out of it, so you basically get it for free. Try that its mostly a trojan you don't know you have messing with all your settings, so it wont let things like unity compile. Hope this helps.
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