As we are updating with the new and latest android sdk versions , There are many modifications that are happening to the new versions.
I got few issues with downloading one of the package , By checking the log I got the following error:
Preparing to install archives Downloading ARM EABI v7a System Image, Android API 15, revision 1 File not found: C:\Program Files\Android\android-sdk\temp\sysimg_armv7a-15_r01.zip (Access is denied)
Reason Behind the error is : sysimg_armv7a-15_r01.zip File is not able to get download in the C:\Program Files\Android\android-sdk\temp. To solve it you will need to download the file manually form Here (click here to download).
Move the .zip file to the C:\Program Files\Android\android-sdk\temp , and you can install the package ARM EABI v7a.
Also Please check the folder /temp will have valid permissions form your administrator , or you can choose the Run by Administrator by right click on the SDK manager.