diff --git a/sdk/storage/storage-blob/ChangeLog.md b/sdk/storage/storage-blob/ChangeLog.md
index 64b15f01640f..0be7f95415af 100644
--- a/sdk/storage/storage-blob/ChangeLog.md
+++ b/sdk/storage/storage-blob/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2019.09 12.0.0-preview.4
+
+- Library tries to load the proxy settings from the environment variables like HTTP_PROXY if the proxy settings are not provided when clients like BlobServiceClient or BlobClient are instantiated.
+
 ## 2019.09 12.0.0-preview.3
 
 - [Breaking] `RawTokenCredential` is dropped. TokenCredential implementations can be found in the [@azure/identity](https://www.npmjs.com/package/@azure/identity) library for authentication.
diff --git a/sdk/storage/storage-blob/samples/javascript/proxyAuth.js b/sdk/storage/storage-blob/samples/javascript/proxyAuth.js
index 8dc4209eb264..6b2003915718 100644
--- a/sdk/storage/storage-blob/samples/javascript/proxyAuth.js
+++ b/sdk/storage/storage-blob/samples/javascript/proxyAuth.js
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-blob/samples/typescript/proxyAuth.ts b/sdk/storage/storage-blob/samples/typescript/proxyAuth.ts
index 8155b4121106..e5449c1ac83b 100644
--- a/sdk/storage/storage-blob/samples/typescript/proxyAuth.ts
+++ b/sdk/storage/storage-blob/samples/typescript/proxyAuth.ts
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-blob/src/Pipeline.ts b/sdk/storage/storage-blob/src/Pipeline.ts
index dcee99dcb1d1..ff5c42589952 100644
--- a/sdk/storage/storage-blob/src/Pipeline.ts
+++ b/sdk/storage/storage-blob/src/Pipeline.ts
@@ -203,7 +203,7 @@ export function newPipeline(
   if (isNode) {
     // ProxyPolicy is only avaiable in Node.js runtime, not in browsers
     let proxySettings: ProxySettings | undefined;
-    if (typeof pipelineOptions.proxy === "string") {
+    if (typeof pipelineOptions.proxy === "string" || !pipelineOptions.proxy) {
       proxySettings = getDefaultProxySettings(pipelineOptions.proxy);
     } else {
       proxySettings = pipelineOptions.proxy;
diff --git a/sdk/storage/storage-file/ChangeLog.md b/sdk/storage/storage-file/ChangeLog.md
index ae9ec2d315a4..b03931b2f07b 100644
--- a/sdk/storage/storage-file/ChangeLog.md
+++ b/sdk/storage/storage-file/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2019.09 12.0.0-preview.4
+
+- Library tries to load the proxy settings from the environment variables like HTTP_PROXY if the proxy settings are not provided when clients like FileServiceClient or FileClient are instantiated.
+
 ## 2019.08 12.0.0-preview.3
 
 - Updated Azure Storage Service API version to 2019-02-02.
diff --git a/sdk/storage/storage-file/samples/javascript/proxyAuth.js b/sdk/storage/storage-file/samples/javascript/proxyAuth.js
index 1432625768f0..520869123d3d 100644
--- a/sdk/storage/storage-file/samples/javascript/proxyAuth.js
+++ b/sdk/storage/storage-file/samples/javascript/proxyAuth.js
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-file/samples/typescript/proxyAuth.ts b/sdk/storage/storage-file/samples/typescript/proxyAuth.ts
index 4cdd6068a0db..961a7bcc7733 100644
--- a/sdk/storage/storage-file/samples/typescript/proxyAuth.ts
+++ b/sdk/storage/storage-file/samples/typescript/proxyAuth.ts
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-file/src/Pipeline.ts b/sdk/storage/storage-file/src/Pipeline.ts
index 61d1eec38cc2..e95b5f158723 100644
--- a/sdk/storage/storage-file/src/Pipeline.ts
+++ b/sdk/storage/storage-file/src/Pipeline.ts
@@ -196,7 +196,7 @@ export function newPipeline(
   if (isNode) {
     // ProxyPolicy is only avaiable in Node.js runtime, not in browsers
     let proxySettings: ProxySettings | undefined;
-    if (typeof pipelineOptions.proxy === "string") {
+    if (typeof pipelineOptions.proxy === "string" || !pipelineOptions.proxy) {
       proxySettings = getDefaultProxySettings(pipelineOptions.proxy);
     } else {
       proxySettings = pipelineOptions.proxy;
diff --git a/sdk/storage/storage-queue/ChangeLog.md b/sdk/storage/storage-queue/ChangeLog.md
index a4a8b6b7eed4..6d63f32a46ca 100644
--- a/sdk/storage/storage-queue/ChangeLog.md
+++ b/sdk/storage/storage-queue/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2019.09 12.0.0-preview.4
+
+- Library tries to load the proxy settings from the environment variables like HTTP_PROXY if the proxy settings are not provided when clients like QueueServiceClient or QueueClient are instantiated.
+
 ## 2019.08 12.0.0-preview.3
 
 - [Breaking] `RawTokenCredential` is dropped. TokenCredential implementations can be found in the [@azure/identity](https://www.npmjs.com/package/@azure/identity) library for authentication.
diff --git a/sdk/storage/storage-queue/samples/javascript/proxyAuth.js b/sdk/storage/storage-queue/samples/javascript/proxyAuth.js
index f1307f99ac29..eca72ca78229 100644
--- a/sdk/storage/storage-queue/samples/javascript/proxyAuth.js
+++ b/sdk/storage/storage-queue/samples/javascript/proxyAuth.js
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-queue/samples/typescript/proxyAuth.ts b/sdk/storage/storage-queue/samples/typescript/proxyAuth.ts
index 0ab67e6c712b..cc4d9d6e41dd 100644
--- a/sdk/storage/storage-queue/samples/typescript/proxyAuth.ts
+++ b/sdk/storage/storage-queue/samples/typescript/proxyAuth.ts
@@ -21,6 +21,7 @@ async function main() {
       // or
       // an option bag consisting {host, port, username, password }
       proxy: { host: "http://localhost", port: 3128, username: "username", password: "password" }
+      // if proxy is undefined, the library tries to load the proxy settings from the environment variables like HTTP_PROXY
     }
   );
 
diff --git a/sdk/storage/storage-queue/src/Pipeline.ts b/sdk/storage/storage-queue/src/Pipeline.ts
index acf6bd897a40..888045a6e73b 100644
--- a/sdk/storage/storage-queue/src/Pipeline.ts
+++ b/sdk/storage/storage-queue/src/Pipeline.ts
@@ -204,7 +204,7 @@ export function newPipeline(
   if (isNode) {
     // ProxyPolicy is only avaiable in Node.js runtime, not in browsers
     let proxySettings: ProxySettings | undefined;
-    if (typeof pipelineOptions.proxy === "string") {
+    if (typeof pipelineOptions.proxy === "string" || !pipelineOptions.proxy) {
       proxySettings = getDefaultProxySettings(pipelineOptions.proxy);
     } else {
       proxySettings = pipelineOptions.proxy;