I have done following task for solutions;
Locate the adb.exe file in the platform-tools folder . Double-click to run it . If it shows an error message , you need to install the C++ runtime from here. Else you should up-date/reinstall the sdk
If other solutions don't work and you're on Windows, check if Visual C ++ is installed.
If needed, you can download it here.
For anyone experiencing issues with Android Studio 3.3.2 not detecting Genymotion: make sure to point Genymotion to use the Android SDK ADB and not the one it's shipped with. It seems like this is because Genymotion is shipped with outdated ADB
i downgrade my adb and use this as guidance https://www.xda-developers.com/install-adb-windows-macos-linux/
Just change adb.exe
in location sdk\platform-tools -adb.exe
and replace it. It will work. SDK folder is in users\account name\appdata\local\android\SDK\platform-tools
In my case: D:\ANDROID SETUP\sdk\platform-tools
due to low c drive space ..
It will work ......