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The error typically happens when VS Code cannot connect to the Marketplace servers. Because "XHR" (XMLHttpRequest) refers to the background requests used to fetch extension data, this failure usually points to a network restriction like a proxy, firewall, or DNS issue. 1. Adjust VS Code Proxy Settings
Locate "Http: Proxy Support" and change the setting to "on" . visual studio code download xhr failed
Visual Studio Code "Error while fetching extensions. XHR failed" The error typically happens when VS Code cannot
Corrupted DNS records can prevent VS Code from reaching its servers even if your internet seems fine. Adjust VS Code Proxy Settings Locate "Http: Proxy
VS Code often struggles to detect system proxy settings automatically. You can manually force it to use specific proxy behavior.
Alternative: If it is already on, try setting it to or "off" to see if it bypasses a misconfigured system proxy. Step 4: Restart VS Code and try your download again. 2. Flush Your DNS Cache
Press F1 (or Ctrl+Shift+P / Cmd+Shift+P ) and type "User Settings" . Step 2: Search for "Proxy" in the settings search bar.