diff --git a/hello-world-bot-with-tab/tab/vite.config.ts b/hello-world-bot-with-tab/tab/vite.config.ts
index 75086e29..f59da272 100644
--- a/hello-world-bot-with-tab/tab/vite.config.ts
+++ b/hello-world-bot-with-tab/tab/vite.config.ts
@@ -4,6 +4,9 @@ import fs from "fs";
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    global: 'globalThis',
+  },
   server: {
     port: 53000,
     https: {
diff --git a/hello-world-teams-tab-and-office-add-in/tab/vite.config.ts b/hello-world-teams-tab-and-office-add-in/tab/vite.config.ts
index 75086e29..f59da272 100644
--- a/hello-world-teams-tab-and-office-add-in/tab/vite.config.ts
+++ b/hello-world-teams-tab-and-office-add-in/tab/vite.config.ts
@@ -4,6 +4,9 @@ import fs from "fs";
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    global: 'globalThis',
+  },
   server: {
     port: 53000,
     https: {
diff --git a/intelligent-data-chart-generator/vite.config.ts b/intelligent-data-chart-generator/vite.config.ts
index c2c269f4..bf2d6164 100644
--- a/intelligent-data-chart-generator/vite.config.ts
+++ b/intelligent-data-chart-generator/vite.config.ts
@@ -4,6 +4,9 @@ import fs from "fs";
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    global: 'globalThis',
+  },
   server: {
     port: 53000,
     https: {
diff --git a/team-central-dashboard/vite.config.ts b/team-central-dashboard/vite.config.ts
index 312e17d1..bf2d6164 100644
--- a/team-central-dashboard/vite.config.ts
+++ b/team-central-dashboard/vite.config.ts
@@ -4,9 +4,11 @@ import fs from "fs";
 
 export default defineConfig({
   plugins: [react()],
+  define: {
+    global: 'globalThis',
+  },
   server: {
     port: 53000,
-    // if you are using SSL  
     https: {
       cert: process.env.SSL_CRT_FILE ? fs.readFileSync(process.env.SSL_CRT_FILE) : undefined,
       key: process.env.SSL_KEY_FILE ? fs.readFileSync(process.env.SSL_KEY_FILE) : undefined,