ADT needs to update but find no update

Question

Today I installed API8 from the SDK manager, previously I only had been working with API14. After the SDK manager was done, and upon restarting ADT I got this error:

This android SDK requires Android Developer Toolkit version 21.1.0 and above. Current version is 21.0.1.2012-12-6-2-58.

So I click to find updates but I get "no updates found".

I did the following:

• Used the SDK manager to re-install android SDK tools (rev 21.1).

• Used the SDK manager to re-install API8 and API14.

Still no go :(

Answer 1

If problem in "http".

• 1) Help --> "Install new software" --> "Available Software Sites"
• 2) Click on "Android Developer Tools Update Site"
• 3) Click "Edit"
• 4) Mofify "http" to "https"
• 5) Click "Ok" --> "Ok"
• 6) Try update again.

Answer 2

I tried all methods mentioned here, but still without success. What finally helped was the tip from No repository found error in Installing ADT in eclipse Indigo:

Uncheck “Contact all update sites during install to find required software”