How to Fix Windows Defender Error Code 0x80073b01?

Your computer might have apparently gotten infected by malware? Your Windows Defender is not running and when you try to enable it in control center you get "error code 0x80073b01"? If you want to fix this error code, you can follow the guides below.

What is Windows Defender Error Code 0x80073b01?

When you try to run Windows Defender app to bring up the control panel for it, you get "An error occurred in the program during initialization..... error code 0x80073b01”. When encountering this error code, you will not go on scanning your computer anymore. Actually, there might be something wrong with your Windows Defender. It can be some malware damaging your Windows Defender. If your computer is infected with malware or even virus, your registry entry and important files or data (which can be related to Windows Defender) will be corrupted. And then some of your software or app will not work normally. Besides, if you install unwanted programs or some antivirus that may conflict your Windows Defender, you will also get this error code.

Once your Windows Defender fails to secure your computer due to this error code, your computer will easily be compromised by other computer threats. And then your secret and important information will be in danger. If other malware take this opportunity to invade your computer, you will put your computer into high risk. You should fix this error to secure your machine and your valuable information.

How to Fix Windows Defender Error Code 0x80073b01?

If you want to fix this error code and restore your Windows Defender, you should find out the malware and remove it. And you should also restore your corrupted files or registry entries. You can follow the steps below to complete the tasks.

Here is a Removal Video for the Similar Issue. Please Watch it For Reference.

Manually Fix Error Code 0x80073b01 Step by Step

Please be careful for this part and remember to backup your important data. If not, you should follow the automatic removal guide.

Firstly, please restart your computer and before Windows interface loads, hit F8 key repeatedly. Choose “Safe Mode with Networking” option, and then press Enter key. System will load files and then get to the desktop in needed option.

Secondly, you can follow these steps to get rid of malware manually: it’s to end virus related processes, search and remove all other relevant files and registry entries. Follow the removal guides below to start.

Step 1: Launch Windows Task Manager by pressing keys Ctrl+Alt+Del or Ctrl+Shift+Esc, search for suspected processes and right-click to end them.

Step 2: Open Control Panel in Start menu and search for Folder Options. When you’re in Folder Options window, please click on its View tab, check Show hidden files and folders and uncheck Hide protected operating system files (Recommended) and then press OK.

Step 3: Click on the “Start” menu and then click on the “Search programs and files” box, Search for and delete these files created by ConvertDocsNow:

%AppData%\<random>.exe
%CommonAppData%\<random>.exe

C:\Program Files

C:\Documents and Settings

Step 4: Open Registry Editor by pressing Windows+R keys, type regedit in Run box and click “OK” to proceed. When Registry Editor is open, search and get rid of all the malicious registry entries:

Thirdly, reboot the computer normally to check whether the virus is completely removed or not.

Automatically Fix Error Code 0x80073b01 with SpyHunter 

Note: SpyHunter has the ability to detect and remove rootkits, which are used to stealth install rogue anti-spyware programs and other trojans. It is designed to assist the average computer user in protecting their PC from malicious threats. Maybe the inexperience users can get help from it. If you find it hard to remove with the manual removal instruction, you can also use this automatic removal tool.

Click the icon below to get SpyHunter.

Step 1: After finishing downloading, click Run to install SpyHunter step by step.

Step 2: After finishing installing, SpyHunter will scan and diagnose your entire system automatically.

Step 3: As the scanning is complete, all detected threats will be listed out. Then, you can click on “Fix Threats” to remove all of the threats found in your system.

Automatically Fix Error Code 0x80073b01 & Optimize Your PC with RegCure Pro

RegCure Pro can fix System Errors, Malware, Performance Issues, Privacy Items, and Junk Files. It may help resolve this Windows Defender Error Code 0x80073b01. Here are some features of RegCure Pro:

1. Cleans away Windows registry errors
2. Ejects active viruses, spyware and other malware
3. Stops unneeded processes and startup items
4. Deletes privacy files that could contain confidential info
5. Find software to open files

Therefore, you are welcomed to download and install RegCure Pro to fix PC problems and your PC back up to speed

Click the icon to download RegCure Pro.

1. Click "Yes" to run the profile.

2. After installation, you can scan your computer for errors by making a system scan.

3. After scanning, choose the items you want to clean and fix.

Good to know:

RegCure Pro is compatible with the Windows 10 64-bit and 32-bit Operating Systems, Windows 8.1 64-bit and 32-bit Operating Systems, Windows 7 64-bit and 32-bit Operating Systems, and Windows XP 32-bit Operating System. It may help you optimize your PC and solve other common PC problems.