diff --git a/AutoCollection/HttpRequestParser.ts b/AutoCollection/HttpRequestParser.ts
index d8e45a0d3..ed9ed6e9d 100644
--- a/AutoCollection/HttpRequestParser.ts
+++ b/AutoCollection/HttpRequestParser.ts
@@ -10,7 +10,8 @@ import CorrelationIdManager = require("../Library/CorrelationIdManager");
 import Tracestate = require("../Library/Tracestate");
 import Traceparent = require("../Library/Traceparent");
 import { HttpRequest } from "../Library/Functions";
-
+import Logging = require("../Library/Logging");
+import { HttpRequestCookieNames } from "../Declarations/Constants";
 
 /**
  * Helper class to read data from the request/response objects and convert them into the telemetry contract
@@ -127,9 +128,9 @@ class HttpRequestParser extends RequestParser {
 
         // don't override tags if they are already set
         newTags[HttpRequestParser.keys.locationIp] = tags[HttpRequestParser.keys.locationIp] || this._getIp();
-        newTags[HttpRequestParser.keys.sessionId] = tags[HttpRequestParser.keys.sessionId] || this._getId("ai_session");
-        newTags[HttpRequestParser.keys.userId] = tags[HttpRequestParser.keys.userId] || this._getId("ai_user");
-        newTags[HttpRequestParser.keys.userAuthUserId] = tags[HttpRequestParser.keys.userAuthUserId] || this._getId("ai_authUser");
+        newTags[HttpRequestParser.keys.sessionId] = tags[HttpRequestParser.keys.sessionId] || this._getId(HttpRequestCookieNames.SESSION);
+        newTags[HttpRequestParser.keys.userId] = tags[HttpRequestParser.keys.userId] || this._getId(HttpRequestCookieNames.USER);
+        newTags[HttpRequestParser.keys.userAuthUserId] = tags[HttpRequestParser.keys.userAuthUserId] || this._getId(HttpRequestCookieNames.AUTH_USER);
         newTags[HttpRequestParser.keys.operationName] = this.getOperationName(tags);
         newTags[HttpRequestParser.keys.operationParentId] = this.getOperationParentId(tags);
         newTags[HttpRequestParser.keys.operationId] = this.getOperationId(tags);
@@ -247,6 +248,16 @@ class HttpRequestParser extends RequestParser {
     private _getId(name: string) {
         var cookie = (this.rawHeaders && this.rawHeaders["cookie"] &&
             typeof this.rawHeaders["cookie"] === "string" && this.rawHeaders["cookie"]) || "";
+
+        if (name === HttpRequestCookieNames.AUTH_USER) {
+            try {
+                cookie = decodeURI(cookie);
+            } catch (error) {
+                // Failed to decode, ignore cookie
+                cookie = "";
+                Logging.warn("Could not decode the auth cookie with error: ", Util.dumpObj(error));
+            }
+        }
         var value = HttpRequestParser.parseId(Util.getCookie(name, cookie));
         return value;
     }
diff --git a/Declarations/Constants.ts b/Declarations/Constants.ts
index 0fb669adc..d1f1ef1ea 100644
--- a/Declarations/Constants.ts
+++ b/Declarations/Constants.ts
@@ -185,6 +185,12 @@ export enum StatsbeatNetworkCategory {
     Quickpulse,
 }
 
+export enum HttpRequestCookieNames {
+    SESSION = "ai_session",
+    USER = "ai_user",
+    AUTH_USER = "ai_authUser",
+}
+
 //Azure SDK Span Attributes
 export const AzNamespace = "az.namespace";
 export const MicrosoftEventHub = "Microsoft.EventHub";
diff --git a/Tests/AutoCollection/HttpRequestParser.tests.ts b/Tests/AutoCollection/HttpRequestParser.tests.ts
index a10ad9c1d..f38321201 100644
--- a/Tests/AutoCollection/HttpRequestParser.tests.ts
+++ b/Tests/AutoCollection/HttpRequestParser.tests.ts
@@ -202,7 +202,22 @@ describe("AutoCollection/HttpRequestParser", () => {
             headers: {
                 host: "bing.com",
                 "x-forwarded-for": "123.123.123.123",
-                "cookie": "ai_user=cookieUser|time;ai_session=cookieSession|time;ai_authUser=cookieAuthUser|time",
+                "cookie": `ai_user=cookieUser|time;ai_session=cookieSession|time;ai_authUser=${encodeURI("cookieAuthUser{}/test|time")}`,
+                "x-ms-request-id": "parentRequestId",
+                "x-ms-request-root-id": "operationId",
+            }
+        }
+
+        const request2 = {
+            method: "GET",
+            url: "/search?q=test",
+            connection: {
+                encrypted: false
+            },
+            headers: {
+                host: "bing.com",
+                "x-forwarded-for": "123.123.123.123",
+                "cookie": "ai_user=cookieUser|time;ai_session=cookieSession|time;ai_authUser=userAuthName|time",
                 "x-ms-request-id": "parentRequestId",
                 "x-ms-request-root-id": "operationId",
             }
@@ -239,11 +254,19 @@ describe("AutoCollection/HttpRequestParser", () => {
             var newTags = helper.getRequestTags(originalTags);
             assert.equal(newTags[(<any>HttpRequestParser).keys.locationIp], '123.123.123.123');
             assert.equal(newTags[(<any>HttpRequestParser).keys.userId], 'cookieUser');
-            assert.equal(newTags[(<any>HttpRequestParser).keys.userAuthUserId], 'cookieAuthUser');
+            assert.equal(newTags[(<any>HttpRequestParser).keys.userAuthUserId], 'cookieAuthUser{}/test');
             assert.equal(newTags[(<any>HttpRequestParser).keys.userAgent], undefined);
             assert.equal(newTags[(<any>HttpRequestParser).keys.operationName], 'GET /search');
             assert.equal(newTags[(<any>HttpRequestParser).keys.operationId], 'operationId');
             assert.equal(newTags[(<any>HttpRequestParser).keys.operationParentId], 'parentRequestId');
         });
+
+        it("should read non-encoded auth user values from headers", () => {
+            const helper = new HttpRequestParser(<any>request2);
+            const originalTags: {[key: string]:string} = {};
+
+            var newTags = helper.getRequestTags(originalTags);
+            assert.equal(newTags[(<any>HttpRequestParser).keys.userAuthUserId], 'userAuthName');
+        });
     });
 });