ADT Plugin can't install: Missing requirement: Android Development Tools

Question

I tried to install ADT plugin on eclipse helios windows 64 bits classic. I got this error:

Cannot complete the install because one or more required it

Answer 1

Right-clicking on the eclipse.exe file and selecting "Run as administrator" will give you file access privileges that will permit ADT updates via the Eclipse/Android SDK Manager in the Eclipse "Window" drop-down.

In my case, my Windows 7 system was lacking the required "Android SDK Platform-tools 16.0.1" plug-in. I suggest re-starting Windows after completing this plug-in installation. Once I re-started Eclipse (Juno), the error message "Could not find C:\Program Files\Android\android-sdk-windows\platform-tools\adb.exe!" was eliminated.