diff --git a/package-lock.json b/package-lock.json
index b0028e3f8..90f314516 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,6 +24,7 @@
                 "@microsoft/vscode-azext-azureutils": "^2.0.1",
                 "@microsoft/vscode-azext-utils": "^2.0.0",
                 "@microsoft/vscode-azureresources-api": "^2.0.4",
+                "cross-fetch": "^4.0.0",
                 "escape-string-regexp": "^4.0.0",
                 "extract-zip": "^2.0.1",
                 "fs-extra": "^4.0.2",
@@ -3670,6 +3671,14 @@
             "integrity": "sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==",
             "dev": true
         },
+        "node_modules/cross-fetch": {
+            "version": "4.0.0",
+            "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.0.0.tgz",
+            "integrity": "sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==",
+            "dependencies": {
+                "node-fetch": "^2.6.12"
+            }
+        },
         "node_modules/cross-spawn": {
             "version": "7.0.3",
             "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
@@ -16107,6 +16116,14 @@
             "integrity": "sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==",
             "dev": true
         },
+        "cross-fetch": {
+            "version": "4.0.0",
+            "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.0.0.tgz",
+            "integrity": "sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==",
+            "requires": {
+                "node-fetch": "^2.6.12"
+            }
+        },
         "cross-spawn": {
             "version": "7.0.3",
             "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.3.tgz",
diff --git a/package.json b/package.json
index f87c00f9d..7bb3077c3 100644
--- a/package.json
+++ b/package.json
@@ -1156,6 +1156,7 @@
         "@microsoft/vscode-azext-azureutils": "^2.0.1",
         "@microsoft/vscode-azext-utils": "^2.0.0",
         "@microsoft/vscode-azureresources-api": "^2.0.4",
+        "cross-fetch": "^4.0.0",
         "escape-string-regexp": "^4.0.0",
         "extract-zip": "^2.0.1",
         "fs-extra": "^4.0.2",
diff --git a/src/commands/executeFunction.ts b/src/commands/executeFunction.ts
index d3286fd80..c17cf609d 100644
--- a/src/commands/executeFunction.ts
+++ b/src/commands/executeFunction.ts
@@ -6,6 +6,7 @@
 import { createHttpHeaders } from '@azure/core-rest-pipeline';
 import { SiteClient } from '@microsoft/vscode-azext-azureappservice';
 import { IActionContext, parseError } from '@microsoft/vscode-azext-utils';
+import fetch from 'cross-fetch';
 import { window } from 'vscode';
 import { FuncVersion } from '../FuncVersion';
 import { functionFilter } from '../constants';
@@ -82,10 +83,15 @@ export async function executeFunction(context: IActionContext, node?: FunctionTr
                 context.errorHandling.suppressReportIssue = true;
                 throw new Error(localize('failedToConnect', 'Failed to connect. Make sure your project is [running locally](https://aka.ms/AA76v2d).'));
             } else if (errorType === '400') {
-                // stringify JSON object to match the format in the portal
-                functionInput = <{}>JSON.stringify(functionInput, undefined, 2);
-                body = { input: functionInput };
-                responseText = (await requestUtils.sendRequestWithExtTimeout(context, { method: 'POST', ...triggerRequest, headers, body: JSON.stringify(body) })).bodyAsText;
+                const response = await fetch(triggerRequest.url, {
+                    method: 'POST',
+                    body: JSON.stringify({
+                        // stringify JSON object to match the format in the portal
+                        input: JSON.stringify(functionInput),
+                    }),
+                    headers: headers.toJSON(),
+                });
+                responseText = await response.text();
             } else {
                 context.telemetry.maskEntireErrorMessage = true; // since the response is directly related to the code the user authored themselves
                 throw error;
diff --git a/test/nightly/createProjectAndDeploy.test.ts b/test/nightly/createProjectAndDeploy.test.ts
index d8d996140..f2f43b285 100644
--- a/test/nightly/createProjectAndDeploy.test.ts
+++ b/test/nightly/createProjectAndDeploy.test.ts
@@ -13,7 +13,7 @@ import * as vscode from 'vscode';
 import { copyFunctionUrl, createGenericClient, createNewProjectInternal, deployProductionSlot, FuncVersion, getRandomHexString, nonNullProp } from '../../extension.bundle';
 import { addParallelSuite, ParallelTest, runInSeries } from '../addParallelSuite';
 import { getTestWorkspaceFolder } from '../global.test';
-import { defaultTestFuncVersion, getCSharpValidateOptions, getJavaScriptValidateOptions, getBallerinaValidateOptions, getPowerShellValidateOptions, getPythonValidateOptions, getTypeScriptValidateOptions, IValidateProjectOptions, validateProject } from '../project/validateProject';
+import { defaultTestFuncVersion, getBallerinaValidateOptions, getCSharpValidateOptions, getJavaScriptValidateOptions, getPowerShellValidateOptions, getPythonValidateOptions, getTypeScriptValidateOptions, IValidateProjectOptions, validateProject } from '../project/validateProject';
 import { getRotatingAuthLevel, getRotatingLocation, getRotatingNodeVersion, getRotatingPythonVersion } from './getRotatingValue';
 import { resourceGroupsToDelete } from './global.nightly.test';
 
@@ -120,7 +120,7 @@ async function validateFunctionUrl(appName: string, functionName: string, routeP
     assert.ok(functionUrl?.includes(routePrefix), `Function url "${functionUrl}" did not include routePrefix "${routePrefix}".`);
 
     const client: ServiceClient = await createGenericClient(await createTestActionContext(), undefined);
-    const response = await client.sendRequest(createPipelineRequest({ method: 'POST', url: functionUrl!, body: { name: "World" } }));
+    const response = await client.sendRequest(createPipelineRequest({ method: 'POST', url: functionUrl!, body: JSON.stringify({ name: "World" }) }));
     const body: string = nonNullProp(response, 'bodyAsText');
     assert.ok((body.includes('Hello') && body.includes('World')) || body.includes('Welcome'), 'Expected function response to include "Hello World" or "Welcome"');
 }