UnityException: JDK not found / SDK not found

Instala una nueva versión de Unity desde Unity Hub

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«Build Failure:Unable to retrieve device properties» error

We are looking today to a disappointing Unity error, that shows sometimes when developing for Android devices.

When you try «Build and Run», sometimes you can get the following error: «Build Failure:Unable to retrieve device properties»
So, here´s the solution:

1- Kill adb.exe process   (ctrl+a+t+supr to open task manager, and «end task» «adb.exe»)
2- Restart your android device.

Thats all, your Build and run should be running fine again.