When I go into the SDK manager in Android Studio, and I go to the tab that says SDK Update Sites, It says \"unknown error\" next to Google Inc. (x86 System Image). I can never u
If none of the suggested solutions works for you, try to run Android Studio as Administrator.
Also ensure there's enough disk space on the partition which you installed Android Studio on.
It takes approx. 4Gb even though it says ~930mb. Keep that in mind!
To ensure diskspace is not the problem go to:
File
→Settings
→Appearance & Behaviour
→System Settings
→Android SDK
→SDK Platforms
then check [X] Show Package Details
and scroll to the Android package you want to install (e g. "Android 7.1.1 (Nougat)").
Check [X] Google APIs Intel x86 Atom System Image
and hit Apply
. Warning will appear in case of insufficient disk space.