ddms: 'adb.exe,start-server' failed -- run manually if necessary, Android Studio

For Windows,

Close Android Studio and any of your Emulators you are using,

then goto->TaskManager and Kill the process(adb.exe)

After finishing all these First open Android studio followed by emulators.

Sometimes there are conflicts between ADB Genymotion and ADB SDK because both of them use the same port. So I recommend always set up ADB Genymotion to use the ADB SDK, in that way to avoid incompatible issues.

Genymotion-> Settings -> ADB -> Use custom Android SDK tools (here your set up your sdk android location).

In my case I was trying to use genymotion emulator device. With genymotion opened and running, I've tried to run my app in this emulator but I it doesn't worth

In this part I had this error:

'C:\Users\Jose\AppData\Local\Android\sdk\platform-tools\adb.exe,start-server' failed -- run manually if necessary

Then I've tried Jaskey's solution but it doesn't works.

So I stopped genymotion emulator. Then I restart ADB (Tools > Android > Unchecked Unable ADB Integration then I've checked again)

Next I've start genymotion emulator again And now the app works on the emulator.