Android Studio: Failed to find Build Tools revision 30.0.3 - android-studio-3.0

Question

Installed latest version of the Android Studio.
Android Studio Bumblebee | 2021.1.1 Canary 13
Build #AI-211.7628.21.2111.7762732, built on September 24, 2021
Runtime version: 11.0.11+9-b60-7590822 amd64
VM: OpenJDK 64-Bit Server VM by Oracle Corporation
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 1280M
Cores: 8
Registry: external.system.auto.import.disabled=true
Non-Bundled Plugins: org.jetbrains.kotlin (211-1.5.31-release-551-AS7442.40)
Unable to build the project: Build is failing everytime. Below is the error log:
Checked the proxy setting, seems not needed because SDK updates & Gradle sync are happening without any issues.
Please advice if I'm missing anything.
> Executing tasks: [:app:assembleDebug] in project C:\MyOrganizer
>
> IOException:
> https://dl.google.com/android/repository/addons_list-5.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-4.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-3.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-2.xml
> java.net.ConnectException: Connection refused: connect IOException:
> https://dl.google.com/android/repository/addons_list-1.xml
> java.net.ConnectException: Connection refused: connect Failed to
> download any source lists! IO exception while downloading manifest:
> java.net.ConnectException: Connection refused: connect at
> java.base/java.net.PlainSocketImpl.connect0(Native Method) at
> java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101)
> at
> java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
> at
> java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
> at
> java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
> at java.base/java.net.Socket.connect(Socket.java:609) at
> java.base/java.net.Socket.connect(Socket.java:558) at
> java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:182) at
> java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:474)
> at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:526)
> at java.base/sun.net.www.http.HttpClient$1.run(HttpClient.java:524)
> at java.base/java.security.AccessController.doPrivileged(Native
> Method) at
> java.base/sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:523)
> at
> java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:564)
> at
> java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:265)
> at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:203)
> at
> java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1232)
> at
> java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)
> at
> java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:189)
> at
> java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:168)
> at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openUrl(DownloadCache.java:245)
> at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.downloadAndCache(DownloadCache.java:622)
> at
> com.android.sdklib.repository.legacy.remote.internal.DownloadCache.openCachedUrl(DownloadCache.java:545)
> at
> com.android.sdklib.repository.legacy.LegacyDownloader.downloadAndStream(LegacyDownloader.java:65)
> at
> com.android.repository.impl.downloader.LocalFileAwareDownloader.downloadAndStream(LocalFileAwareDownloader.java:51)
> at
>
>
> * Get more help at https://help.gradle.org
>
> BUILD FAILED in 14s
Please advice a fix. Thanks

Answer 1

You should go to SDK Manager and install the new Platform-tools
Go to File -> Project Structure -> Modules and select the Properties Tab from the top of the right column
Choose your Build Tools Version and click on ok.