How to Fix Windows Defender Error 0x800700aa on Your Computer

One of the common errors on Windows Defender is error “0x800700aa”. The exact cause of error 0x800700aa has not been identified yet, but we still have solutions to fix it. In this article, Software Tricks will guide you on how to fix Windows Defender 0x800700aa error on Windows 10.

1. Fixing Windows Defender 0x800700aa Error Using Services

Services provide available services on Windows 10. You can directly access them here to customize some services, including Windows Defender.

Step 1: Open the Start Menu and type Services to open the Windows 10 service manager.

Step 2: Next, locate the Windows Defender Advanced Threat Protection Service.

Step 3: In the settings window, change the Startup Type to Automatic and press Apply => OK to confirm.
After completion, restart your computer to check.

2. Fix Windows Defender 0x800700aa Error Using Registry Editor

Registry Editor allows you to intervene in various data on your computer and is also a favorite tool used whenever the computer encounters errors.

Step 1:

Step 2: Next, copy the following link and paste it into the navigation bar to navigate to the folder you need to use.

Step 3: In the WinDefend folder, locate the Start item and double-click to open it.

Step 4: Finally, simply change the Value Data to 2 and press OK to complete.

3. Fix Windows Defender 0x800700aa Error Using CMD

CMD – Command Prompt provides various features through command lines, allowing you to quickly check and fix errors.

Step 1: Open the Start Menu and type CMD to open Command Prompt.

Step 2: Next, you should sequentially copy the commands below and paste them into Command Prompt for Windows to automatically fix the error.

Step 3: Once you've completed running the commands, exit CMD and restart your computer to check.

In this article, Software Tricks has guided you on how to fix Windows Defender 0x800700aa error on Windows 10: Have a great day, everyone!