diff --git a/src/base-command.ts b/src/base-command.ts
index 47bd1f6..570b3b0 100644
--- a/src/base-command.ts
+++ b/src/base-command.ts
@@ -68,15 +68,16 @@ export abstract class BaseCommand<T extends typeof Command> extends Command {
 
     ux.registerSearchPlugin();
     this.registerConfig();
-    this.validateRegionAndAuth();
-
+    
     this.developerHubBaseUrl =
-      this.sharedConfig.developerHubBaseUrl || (await getDeveloperHubUrl());
+    this.sharedConfig.developerHubBaseUrl || (await getDeveloperHubUrl());
     await this.initCmaSDK();
-
+    
     // Init logger
     const logger = new Logger(this.sharedConfig);
     this.log = logger.log.bind(logger);
+    
+    this.validateRegionAndAuth();
   }
 
   protected async catch(err: Error & { exitCode?: number }): Promise<any> {
@@ -161,12 +162,11 @@ export abstract class BaseCommand<T extends typeof Command> extends Command {
    * The `validateRegionAndAuth` function verify whether region is set and user is logged in or not
    */
   validateRegionAndAuth() {
-    //Step1: check region
     if (this.region) {
-      //Step2: user logged in or not
       if (!isAuthenticated()) {
-        throw new Error(this.messages.CLI_APP_CLI_LOGIN_FAILED);
-      }
+          this.log(this.messages.CLI_APP_CLI_LOGIN_FAILED, "error");
+          this.exit(1);
+        }
     }
   }
 }
diff --git a/src/commands/app/install.ts b/src/commands/app/install.ts
index 908f46d..d70965c 100644
--- a/src/commands/app/install.ts
+++ b/src/commands/app/install.ts
@@ -132,8 +132,8 @@ export default class Install extends AppCLIBaseCommand {
   displayStackUrl(): void {
     const stackPath = `${this.uiHost}/#!/stack/${this.flags["stack-api-key"]}/dashboard`;
     this.log(
-      `Start using the stack using the following url: ${stackPath}`,
+      `Please use the following URL to start using the stack: ${stackPath}`,
       "info"
     );
   }
-}
+}
\ No newline at end of file
diff --git a/src/util/inquirer.ts b/src/util/inquirer.ts
index df3eeab..14667e7 100644
--- a/src/util/inquirer.ts
+++ b/src/util/inquirer.ts
@@ -1,4 +1,5 @@
 import find from "lodash/find";
+import isEmpty from "lodash/isEmpty";
 import { existsSync } from "fs";
 import { basename, dirname, join } from "path";
 import {
@@ -228,13 +229,19 @@ async function getInstallation(
     if (uninstallAll) {
       return installations.map(installation => installation.uid).join(',')
     }
-    let _selectedInstallation = await cliux
+    let _selectedInstallation: string[] = await cliux
     .inquire({
       type: 'checkbox',
       name: 'appInstallation',
       choices: installations,
-      message: messages.CHOOSE_AN_INSTALLATION
-    }) as string[]
+      message: messages.CHOOSE_AN_INSTALLATION,
+      validate: (input) => {
+        if (isEmpty(input)) {
+          return $t(errors.NOT_EMPTY, { value: "stack value"});
+        }
+        return true;
+      }
+    }) 
     selectedInstallation = _selectedInstallation.join(',')
   } else {
     // as this is an organization app, and it is supposed to only be installed on the source organization