It Displays 0x80070643 Error While Downloading Windows OS; Refer To The Solution Of The Problem.

It Displays 0x80070643 Error While Downloading Windows OS; Refer To The Solution Of The Problem.

0x80070643 error is an error that occurred in the program’s initialization. This error refers to a non-genuine copy of Windows, and Microsoft Security Essential (MSE) doesn’t work properly. It leaves the computer completely vulnerable as Windows Defender doesn’t even startup. The simple solution to the problem is to simply uninstall Microsoft Security Essentials (MSE), allowing Windows Defender to do its job and protect the system.

The steps to fix the 0x80070643 error through Windows Defender are as follows:

• Open run dialog by pressing Windows Key+ R and type ‘taskmgr, then hit Enter. Locate Windows Defender Service (WinDefend), and choose Stop.

The service will restart after the computer reboots. Between that, uninstall the Essentials.

• Go to Control Panel -> Programs & Features -> Uninstall a program or Hold Windows key and R then type ‘appwiz. cpl’ and click on OK. Now, locate Microsoft Essentials and uninstall it. Then, Restart your computer.
• Go to Setting -> Update & Security, choose “Windows Defender,” and checks Real-time protection.

Now, check the Defender is running or not.