i try to Update version 5.0 layout Library inside android studio , but end of download return this error :
Loading SDK information...
Refresh Sources:
Fetched Add-ons List successfully
Refresh Sources
Installing Archives:
Preparing to install archives
Installing SDK Platform Android 5.0.1, API 21, revision 2
Failed to rename directory E:\Android\SDK\platforms\android-21 to
:\Android\SDK\temp\PlatformPackage.old01.
SDK Manager: failed to install
-= Warning ! =-
A folder failed to be moved. On Windows this typically means that a program
is using that folder (for example Windows Explorer or your anti-virus software.)
Please momentarily deactivate your anti-virus software or close any running programs that may be accessing the directory 'E:\Android\SDK\platforms\android-21'.
When ready, press YES to try again.
Note: you can use --force to override to yes.
[y/n] =>
Done. Nothing was installed.

then i try to input y character , disable Antivirus and check internet connection , but not resolve problem!
what is solution!?