Eclipse error "ADB server didn't ACK, failed to start daemon"

Question

After updating the SDK, Eclipse shows this error:

ADB server didn't ACK, failed to start daemon.

When I run an Android application, it gives me the following:

Please ensure that adb is correctly located at 'D:\android-sdk-windows\platform-tools\adb.exe' and can be executed.

How can I fix this problem?

Answer 1

I have solved my first question: Open Eclipse, open the SDK Manager, and choose the device to open.

Or you can open the SDK directory. Open the SDK Manager, and then choose the device to open

2: Close Eclipse, and then open it.