A Microsoft 365 subscription gives you access to the Microsoft Defender app on all your devices, including your Windows 11 PC. It works with Windows Security to keep you safe online by providing web protection, real-time security alerts, and other essential security tips. However, you may only be able to take advantage of these features if you're not signed in to Microsoft Defender app on your Windows 11 PC.
If you can't access the Microsoft Defender application due to mysterious errors, don't worry. Here are some helpful tips that should help you regain access to the Microsoft Defender application in a short time.
1. Double-check your Microsoft Defender sign-in credentials.
Before diving into technical troubleshooting, double-check your sign-in credentials for any spelling errors. You also need to make sure you're using the account associated with your Microsoft 365 Family or Personal subscription.
If you're still seeing the "Unable to sign in to Microsoft Defender" message, continue with the fixes below.
2. Close the app and try again.
Sometimes, temporary errors in the Microsoft Defender application can prevent it from establishing a connection to the server and verifying your sign-in credentials. In most cases, you can resolve the issue by Close the application completely And reopen it. Here are the steps for the same.
Step 1: Press the keyboard shortcut Ctrl + Shift + Esc To open Task management.
Step 2: Select tab Operations and locate Microsoft Defender In the menu. Right-click on it and select the option finish the job.
Reopen the Microsoft Defender application on your PC and try signing in again.
3. Repair or reset the Microsoft Defender application
Include Windows 11 PC on Feature Repair can automatically fix common issues with UWP (Universal Windows Platform) apps. You can use this feature to repair the Microsoft Defender app and see if it resolves the sign-in error.
Step 1: Right click on the icon START YOUR On the taskbar and select Installed apps.
Step 2: Scroll through the list to locate the application. Microsoft Defender In the menu. Click on the icon. Menu consisting of three points Next to it and select Advanced Options.
Step 3: within the section Reset, click the . button repair. A check mark should appear next to the button once the process is complete.
If you can't sign in to the Microsoft Defender app even after repairing it, try resetting it. To do this, repeat the steps above and select the Reset button. This will clear any problematic app data that may have caused the app to malfunction.
4. Update the app
These sign-in issues can also occur in the Microsoft Defender app if you're running the old app on your Windows 11 PC. You can visit the app Microsoft Store To check for a Microsoft Defender update. After updating the app, you can sign in to your account.
Microsoft Defender for Windows
5. Install Windows updates
It's important to keep Windows up to date to avoid such issues. So, if updating Microsoft Defender doesn't help, check if any updates are available for your system.
Press the keyboard shortcut Windows + I To open an application Settings. Select tab Windows Update From the left sidebar click on the button Verification There are no updatesDownload and install any pending updates and check if that resolves the issue.
6. System Restore
Recent changes to your system may have caused this issue. If you can't determine the cause, you can try Perform a System RestoreThis will allow you to restore your PC to a point where Microsoft Defender was working properly.
Don't worry, this process won't erase your files or data. However, it will remove any programs or updates installed after the restore point you selected.
Step 1: Click on the icon Search On the taskbar, type Create a restore point, and select First result that appear.
Step 2: in System properties, select tab system protection.Then click the button. System Restore.
Step 3: Select an option recovery Recommended and click Next to follow.
Step 4: Click "ending" to follow.
Once Windows has restored itself to the specified point, you can use the Microsoft Defender application.
No more Microsoft Defender sign-in issues
The Microsoft Defender dashboard makes it easy to check the security status of all your devices in one place. While sign-in errors can sometimes prevent you from accessing the Microsoft Defender app in Windows 11, there's nothing you can't fix with the solutions above.
