The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Open the app, go to the app's top-level menu, and then select Send feedback. After that, contact Support or go to the Microsoft Authenticator app forum and explain the problem you're seeing and the steps you tried.

Note: This article uses a Windows device for demonstration purposes, but you can also register devices running iOS, Android, or macOS. What happens when you register your device While you're registering your device on your organization's network, the following actions will happen: Windows registers your device on your organization's network.

Due to the built-in security settings in iOS, other apps aren't able to see the address (URL) an app is trying to open, including those being opened in the web browser.

You should unlink any devices you no longer use, because you can only download Microsoft Store apps and content to 10 devices attached to your account. If you can't download content from the Microsoft Store, you may have reached your device limit.

Add your Outlook.com, Microsoft 365, or Exchange-based email account to your iPhone, iPad, or iPod Touch using Outlook for iOS.

Learn how you can use Outlook for Android or iOS to sign into your Microsoft personal or work/school account.

Microsoft Defender is a new security app that helps protect you and your family across all your devices; Windows, Android, Mac, and iOS.

Learn how to install the Microsoft 365 Copilot mobile app on your iPhone or iPad and use the apps with Microsoft 365.

You should see App Builder in the left navigation pane under Agents. App Builder's availability is controlled by your organization's Microsoft 365 app store settings, which follow your company's policies and permissions.