Hey there, sorry to hear you're stuck with this frustrating Android SDK installation issue—let's walk through some targeted fixes that often resolve this kind of problem, even when the usual steps (admin rights, changing install directories) haven't worked.

• Flush SDK Manager's cache completely
  Corrupted cached files are a common culprit for repeated install failures. Here's how to clear them:

  1. Open SDK Manager, go to the Tools menu > Options
  2. Click the Clear Cache button at the bottom of the window
  3. Restart SDK Manager and attempt your install again
     If the GUI cache clear doesn't help, manually delete the cache folder: navigate to your SDK's .android/cache directory (usually in your user profile or the SDK root folder) and delete all files inside.

• Temporarily disable antivirus/firewall tools
  Even with admin rights, overprotective antivirus or firewall software might block SDK Manager from downloading or writing critical files. Try disabling these tools temporarily (don't forget to re-enable them after testing) and run the install again.

• Switch to the command-line SDK Manager
  The GUI version can sometimes hide underlying errors. Let's use the command-line tool for more transparency:

  1. Open a command prompt/terminal with admin privileges
  2. Navigate to your SDK's tools/bin directory (e.g., cd C:\Android\sdk\tools\bin on Windows)
  3. First, list available packages to confirm your target version: sdkmanager --list
  4. Install your desired SDK platform with a command like: sdkmanager "platforms;android-27" (replace android-27 with android-24 for 7.0, android-23 for 6.0)
     This will output detailed error messages if the install fails, which can help us pinpoint the exact issue.

• Re-download the SDK tools package
  If you used a pre-downloaded SDK starter package, it might be corrupted. Grab the latest SDK tools from the official Android developer resources (verify the checksum if provided) and set up a fresh SDK directory from scratch.

• Check proxy settings
  Misconfigured proxy settings—even if you don't actively use a proxy—can block download requests. Go to SDK Manager > Tools > Options, ensure no proxy is configured unless you need one, and check the box for "Force https://... sources to be fetched using http://" as a workaround for potential SSL issues.

If none of these steps resolve the problem, could you share the exact error message you see when the install fails? Even a short snippet will help narrow down whether it's a download timeout, file permission error, or another underlying issue.

内容的提问来源于stack exchange，提问作者MARU Matthieu