diff --git a/packages/core/src/shared/utilities/proxyUtil.ts b/packages/core/src/shared/utilities/proxyUtil.ts
index a8d2056d7f4..f03c2b18a5e 100644
--- a/packages/core/src/shared/utilities/proxyUtil.ts
+++ b/packages/core/src/shared/utilities/proxyUtil.ts
@@ -70,6 +70,12 @@ export class ProxyUtil {
      * Sets environment variables based on proxy configuration
      */
     private static async setProxyEnvironmentVariables(config: ProxyConfig): Promise<void> {
+        // Always enable experimental proxy support for better handling of both explicit and transparent proxies
+        process.env.EXPERIMENTAL_HTTP_PROXY_SUPPORT = 'true'
+
+        // Load built-in bundle and system OS trust store
+        process.env.NODE_OPTIONS = '--use-system-ca'
+
         const proxyUrl = config.proxyUrl
         // Set proxy environment variables
         if (proxyUrl) {