Visual Studio 2017中Android SDK Manager无法加载SDK信息求助

Hey there, since you've already narrowed this down to a corporate firewall issue (works on LTE, fails on internal network), let's walk through actionable fixes tailored to your setup:

1. Verify Visual Studio's Proxy Configuration #

VS might not be picking up your corporate proxy settings correctly, which blocks the SDK Manager from fetching component data:

• Open Visual Studio 2017, go to Tools > Options > Environment > Web Browser > Proxy Settings
• Check the box for "Use Internet Explorer proxy settings" (this pulls your corporate proxy config from IE)
• If that doesn't work, try manually entering your enterprise proxy address and port in the manual proxy fields

2. Configure Android SDK Manager's Proxy Directly #

The integrated SDK Manager has its own proxy settings separate from VS:

• Launch the Android SDK Manager from VS (even if it fails to load), click the Tools menu at the top
• Select Options, then under the Proxy Settings tab:
  • Enable "Use HTTP Proxy Server"
  • Enter your corporate proxy address, port, and any required authentication credentials (username/password for the proxy)
• Save changes and restart the SDK Manager

3. Request IT to Whitelist Critical Android SDK Domains/Ports #

Your firewall is likely blocking outbound requests to Google's SDK repositories. Share this list with your corporate IT team to whitelist:

• Domains: dl.google.com, dl-ssl.google.com, maven.google.com, android.googlesource.com
• Ports: Standard HTTP (80) and HTTPS (443)
• Note: If your company uses a content filter, also ensure these domains aren't flagged as restricted content

4. Clear Android SDK Manager Cache #

Corrupted local cache can sometimes cause loading failures even with proper network access:

• Close Visual Studio and the SDK Manager completely
• Navigate to C:\Users\<YourUsername>\.android\cache (replace <YourUsername> with your Windows login)
• Delete all files and folders in this cache directory
• Reopen Visual Studio and launch the SDK Manager to see if it loads correctly

5. Test with the Standalone SDK Manager Command Line #

If the integrated VS SDK Manager still fails, test with the standalone tool to isolate the issue:

• Navigate to your Android SDK's tools\bin directory (default path might be C:\Program Files (x86)\Android\android-sdk\tools\bin)
• Open a command prompt here and run: sdkmanager --list
  • If this command returns an error about network access, confirm with IT that the sdkmanager.exe process is allowed outbound connections
  • If it works, the issue might be with VS's integration—try repairing your VS 2017 installation via the Visual Studio Installer

6. Update Visual Studio to the Latest 15.x Release #

Your current version (15.5.7) is quite old, and Microsoft fixed several network/SDK Manager bugs in later updates:

• Open the Visual Studio Installer, check for updates, and install the latest available update for VS 2017 Enterprise (up to version 15.9.51)
• After updating, retry launching the SDK Manager

内容的提问来源于stack exchange，提问作者djrpascu