Preparing to install archives Downloading Android SDK Platform-tools, revision 20 URL not found: C:\Program Files (x86)\Android\android-studio\sdk\temp\platform-toolsr20-windows.zip (Access is denied) Downloading Android SDK Build-tools, revision 19.1 URL not. after Android SDK Tools installed go to android sdk location folder choose tools folder then you will find file name package choose package file and press right button by mouse and choose Open with and choose Notepad Program and press Ctrl + f to search and type Obsolete and press Enter and change it from true to false and press Ctrl + s to save and Press Close. As of lately i have not being able to update / install SDKs from Android SDK Manager.go to android studio then Press More Actions then choose SDK Manager then Press SDK Tools and in the right bottom Uncheck box Hide Obsolete Packages and in the SDK tools Check box Android SDK Tools and Press Apply and Ok.go to sdk location folder if you find folder name tools its ok if not find tools folder must install it by Android Studio.in the option Android SDK Location Select sdk location by mouse and copy it by Ctrl + c then Press Ok and close Android Studio.choose another drive to save sdk for example D drive or E drive and create new folder and rename it sdk and choose sdk folder and press Ok and Press Next then Press Next.from option Android SDK Location Press Edit then in the option Android SDK Location Press Browse option.press More Actions option and choose SDK Manager.To fix SDK tools directory is missing in Android Studio follow this steps.
How to Fix SDK tools directory is missing in Android Studio