Error when run Android studio IDE

Question

When I launch Android studio I encounter this Error:

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Answer 1

Try to rename folder 21.1.2 inside Android SDK build-tools folder (in my case it was c:\Users\prokofyev\AppData\Local\Android\sdk\build-tools\21.1.2) to android-5.0 (in my case it became c:\Users\prokofyev\AppData\Local\Android\sdk\build-tools\android-5.0). This way I fixed similar error on new Android Studio installation.

Answer 2

download build-tools:21.1.1 from build-tools_r21.1.1-windows.zip

and unzip, it will extract the entire folder to copy or move your sdk /build-tools folder. name folder must be build-tools_21.1.1

Answer 3

Some tools are missing.

Download build-tools_r21.1.1-windows.zip and unzip it. Run Android Studio again.

If you get similar error again Check this for missing android tools.

Enjoy coding..:)

Answer 4

This usually happens when you can not download sdk from google, try to download it manually.

You can get the build you mentioned at google or bellow link:

this link

Unzip it in \sdk\build-tools

Answer 5

If you are getting UnknownHostException the the problem lies in the proxy - click the close icon (the X in the upper right corner) and agree to start setup next time again. Then in the Studio itself go to Configure -> Settings -> search for proxy and set up your proxy (auto-detect or manual).

Running as administrator might help as well

Answer 6

Configure a proxy for Android studio by modifying other.xml file at:

C:\Users\"Your account"\.AndroidStudio\config\options\other.xml

Then change the proxy configurations as follows:

<option name="USE_HTTP_PROXY" value="true" />
<option name="USE_PROXY_PAC" value="false" />
<option name="PROXY_HOST" value="your_proxy_server" />
<option name="PROXY_PORT" value="your_proxy_port" />