Bug JAVA_HOME is not set and no 'java' command could be found in your PATH

Hi,

I'm using the JDK and android sdk installed with unity but the player settings of android never open.


I always get the following errors.

I tried to set manually JAVA_HOME and PATH to 'C:/dev/Unity/Installations/2019.2.2f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\OpenJDK\Windows' and 'C:/dev/Unity/Installations/2019.2.2f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\OpenJDK\Windows\bin' in my computer's environment settings, but I'm still getting the same error.
I tried running C:/dev/Unity/Installations/2019.2.2f1/Editor/Data/PlaybackEngines/AndroidPlayer/SDK\tools\bin\sdkmanager.bat --list from cmd and it ran without problems.

Thanks for advance.

 

Thank you for your reply.
I tried that. I also tried to manually point to the JDK path C:/dev/Unity/Installations/2019.2.2f1/Editor/Data/PlaybackEngines/AndroidPlayer/Tools\OpenJDK\Windows in the preferences, but I got the same weird error.

Upgrading to 2019.2.3f1 fixed the problem however.

 

Oh my god... It was just as simple as that... I spent lot of time trying to figure out what was wrong...
Had this issue suddenly on unity 2019.3.13f1 (it was working and the day after it wasn't).

anyway it's fixed now ! thx for the tips

 

Hi I had the same error but i did not get your solution please?I will be very happy if you share. Thank you.

 

+1

 

Uncheck jdk checkbox and paste jdk path manually:
C:\Program Files\2019.1.7f1\Editor\Data\PlaybackEngines\AndroidPlayer\Tools\OpenJDK\Windows\

 

Hi everyone, I have unchecked the box, closed preferences window then opened it again and checked the box. In that way it worked for me
However it's strange to have such an unsual solution I think it's that restarting thing with computers

 

Once again hi everyone, strangely today I had the same issue again. Although the automatically set path is correct, I did as playpes16 said and this time it worked. The path I pasted was the same as the automatically set one but this time Unity wanted in that way I guess

 

Worked for me too uncheck/check

 

Hi All,
Had the exact same problem, working one day failed the next. This happened after a windows update, which I suspect may have caused the issue. Anyway, my fix was to select browse on JDK & SDK and select the same folders that they are supposedly addressing. Checking and unchecking did not work for me – guess it’s just buggy…

 

I can also verify the solution, although it is important that when unchecking, you have to close the preference window and then open it again and tick the checkbox again - then it will work.

 

It happened to me to

 

Still didn’t work for me

 

Worked like a charm...Though it worked after i did it for both jdk and android sdk....

 

Unity 2020.2.0f1
Still experiencing that issue.

Checking-unchecking / defining JAVA_HOME manually in the environment variables and other "mumbo-jumbo"-like solutions from the unity team don't work for me.

Whem will that be fixed?

 

how ? I cant uncheck Jdk chekbox to remove

 

check /uncheck worked like a charm

 

check /uncheck worked at 2019.4.16f

 

When is unity planning to fix this issue?

 

In my case this thing worked:

1.- Click the button "Copy path" of the JDK
2.- Uncheck the "JDK installed with unity(recomended)"
3.- Paste the rute.

Use the same rute that is by default but manually and it works, I don't know why.

EDIT:
this post save my life, idk if you need to do my first steps or not
https://answers.unity.com/questions/1638828/how-to-set-java-home-using-openjdk.html

 

For those who have still have this problem (even toggle the button). It look like you need to press run button or submit and restore your project with unity collab or do something until android resolver dialog box popup then you click ok it doesn't matter if the result is failed now you can build your apk

 

LOL. worked for me as well. simply unchecked and checked the JDK in preferences.

 

Many thanks. It works for me

 

Had this happen in 2020.1.17f1 The strange thing was I had 2 projects open. Both android. One built perfectly and the other gave this error. Settings were the same as far as I could tell.

The uncheck/check solution only worked after I closed the preferences window and re-opening between toggles.

 

The same thing happened for me. I'm on Unity 2020.3.11f1

 

did you find any solution

 

In 2020.3 I fixed by hard coding the correct paths. The resolver was stuck looking for the version of unity the project was originally created in (2018), even though the editor window showed the correct paths. Seems like an engine bug, but these custom fields are a good workaround.

 

Unity Seriously! This needs to be fixed. I tried manually defining the paths, deselect close and reselect the paths. Still nothing. It was working yesterday and today it stops with this error. The engine is inconsistent! Unity needs to get an android build process that actually works first time. My project is now on hold because the build process keeps changing every day.

SOLUTION: I had to update from 2020.3.14f1 to 2020.3.15f2 to fix the problem!

 

This issue is acttually comes from 2018 start at least, full unity reinstall doesn't help, i'm having "fun" with this error for couple of years, some how unity doesn't seem to track it's own installation changes and screws setting on each version change, you have to either keep some "working" unity version permanetly on your machine (once that version of JDK works) or have fun with each unity version update, since, with deletion of old version of JDK, paths screw up in Unity and "have fun".

Thank you Unity...

 

Rebooting after setting JAVA_HOME and the path seems to have done the trick for me.

 

For those who still have the problem even after toggling the JDK checkbox in Unity, do the following
1. Download JDK 8 from here.
2. Install it
3. Try running now and it should work!

Thanks,
VB Team

 

set this path(Image Attached) into your environment variable if you are using windows PC.

 

Please check and uncheck JDK in prefrences and if still didnt resolve then please restart your system and then you resolve this issue.

 

While the uncheck-check method works, a permanent solution is to clean install unity hub + editor and all the project files (importing from your source control is the best option).
This was the method that solved the problem permanently for me, it probably has to do with unity caching enviroment variables (?).
The error that i was getting about JAVA_HOME was pointing to a path that didnt exist in my systems enviroment variables..

 

This is problem is still there with Unity 2020.3.2 version with similar solution.

 

Same issue here on 2021.3.3f1 - unChecking/Checking not working

 

If closing/unclosing is really not working for you, after closing and reopening Unity, rebooting your computer, etc, you can try installing Java 8 as @Voxel-Busters is suggesting.

As a last resort, you might want to try a clean install of the editor. Close any other versions of Unity you might have running, just for good measure, then uninstall and reinstall the editor version causing problems making sure you tick all the Android module boxes.

 

Work for me

 

in my case, the following slightly modified process as mentioned above only works
1. Uncheck JDK box and leave blank
2. Attempt a Build ( which will fail of course)
3. Recheck the JDK box and then Build

 

29.07.2022 still same problem valid above solutions working

 

This work-around works for me as well, however, it has to be done every time I open up Unity Editor.

Are Unity working on a PROPER fix for this @Aurimas-Cernius ?

 

Thank you! Looking very much forward to it.

 

Ah! Finally!
Thanks for fixing and sharing!

 

Hello,
Previously, deselecting and re-selecting worked for me as well, but later it stopped working. I was about to go crazy. Later I saw your method and tried it. I deselected and got build. The error did not go away in the build, then I tried to make a choice again and froce resolve, this time it was force resolve without any problem. Thanks a lot, good work

 

i got the same error in 2021.3.8f1 version and this solution works, but how is it still an issue after 9 years

 

Unity 2021.3.6f1 still has this issue and simple checking\uncheking worked for me

 

Unity 2022.2.20

To get it to fully work, I had to do the following in the exact order:

1. Assets > External Dependency Manager > Android Resolver > Delete Resolved Libraries
2. Assets > External Dependency Manager > Android Resolver > Restore Defaults
3. Uncheck / Check the JDK as suggested earlier
4. Assets > External Dependency Manager > Android Resolver > Force Resolve

 

worked for me too thanks a lot