An error has occurred in the program during initialization if this problem continues please contact

Fix Windows Defender Error 0x800b0100, An error has occurred in the program during initialization

If Windows Defender on Windows 11/10 gives you trouble while opening it for a scan, you might get some help from this article. The error code 0x800b0100 might occur due to some unknown reasons, but you can fix it with the help of this guide. To be precise, the entire error message says something like this-

An error has occurred in the program during initialization. If this problem continues, please contact your system administrator. Error code: 0x800b0100

Different folks have encountered this issue at various times. The most common situation is that they sensed some lag in their system and tried to open the Windows Defender to scan it. If you are one of the victims, the following troubleshooting guides might be handy for you.

0x800b0100, An error has occurred in the program during initialization

To fix Windows Defender Error Code 0x800b0100, follow these suggestions-

1. Restart Windows Defender Services
2. Reset Defender settings to default
3. Run the System File Checker tool
4. Run DISM to repair system image
5. Use Fresh Start option in Windows 10
6. Perform a repair upgrade

1] Restart Windows Defender Services

If your computer has malware, chances are they have already disabled all the Windows Defender related services. You need to verify if all the services are running or not.

Open Windows Services Manager and locate the following four Services:

• Windows Defender Antivirus Service
• Windows Defender Antivirus Network Inspection Service
• Windows Defender Advanced Threat Protection Service
• Windows Defender Firewall.

You may Stop and Start them or simply use the Restart option, available in the right-click context menu.

2] Reset Defender settings to default

You can use our freeware FixWin to reset Windows Defender to default settings.

3] Run the System File Checker tool

System File Checker is a command-line utility that helps you find potentially corrupted system files and fix them, respectively. You need to execute the following command in an elevated Command Prompt window.

4] Run DISM to repair system image

DISM or Deployment Image Servicing and Management is a command-line tool that lets you fix conventional system related issues like this one. It can detect various hardware drivers as well as software-related problems and fix them accordingly. The best thing is that you do not need to download any software to get it running as it is a command-line tool, as mentioned earlier. That means you need to open an elevated Command Prompt window and enter some commands. To run DISM to repair Windows System Image execute the following command:

You can run SFC and DISM, one after one. If you are confused about which one you should run, do follow this guide where we elaborated whether you should run DISM or SFC first.

5] Use Fresh Start option

The Fresh Start option will give you a brand-new system with all the problems excluded. It:

1. Keeps all your data,
2. Removes all third-party apps,
3. Force Updates Windows to the latest version.

Alternatively, you can use Reset This PC option.

6] Perform a Repair upgrade

You may need to repair Windows using Installation Media. This solution will help you repair your system from top to bottom, and it is reliable too. However, you need the Windows 10 ISO and create a bootable USB drive to get started with this process.

These solutions should help you to get rid of the error code 0x800b0100 in Windows Defender.

Date: March 11, 2021 Tags: Defender, Errors

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How to Fix Microsoft Security Error 0x80073b01

By Timothy Tibbetts

Microsoft Security (Windows Defender) might show you an error that reads, An error has occurred in the program during initialization. If this problem continues, please contact your system administrator. Error code: 0x80073b01.

TIP : Hard to fix Windows Problems? Repair/Restore Missing Windows OS Files Damaged by Malware with a few clicks

We do know that the error is most likely a conflict with another security application or corrupted system files. Try the following steps to resolve this error.

1: Microsoft Security Error 0x80073b01 — Uninstall Other Security Software

If you have third-party security software, uninstall it if that’s a possibility.

However, we know this isn’t a solution for many security-conscious people. Instead, check for updates to your software and Windows Updates. Your third-party security software most likely will find a way to fix the problem, so they don’t lose you as a customer.

2: Microsoft Security Error 0x80073b01 — Check Services

Press the Windows Key + S, type in services.msc, and press Enter.

Confirm the following services:

Microsoft Security (Windows Defender) might show you an error that reads, An error has occurred in the program during initialization. If this problem continues, please contact your system administrator. Error code: 0x80073b01.

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We do know that the error is most likely a conflict with another security application or corrupted system files. Try the following steps to resolve this error.

1: Microsoft Security Error 0x80073b01 — Uninstall Other Security Software

If you have third-party security software, uninstall it if that’s a possibility.

However, we know this isn’t a solution for many security-conscious people. Instead, check for updates to your software and Windows Updates. Your third-party security software most likely will find a way to fix the problem, so they don’t lose you as a customer.

2: Microsoft Security Error 0x80073b01 — Check Services

Press the Windows Key + S, type in services.msc, and press Enter.

Confirm the following services:

Some Windows 10 users have reported an Error 0x80073b01 when they try to turn on the Windows Defender, and it fails. This error can also occur during your computer startup, and Windows Defender fails to open. If you’re also encountering such an issue on your Windows 10 computer, then there are a few things that you can apply to solve this problem.

With this error code, you may get the following error message –

An error has occurred in the program during initialization. If this problem continues, please contact your system administrator.
Error code: 0x80073b01

Microsoft Defender Error 0x80073b01 on Windows 10

To fix the Microsoft Defender Error 0x80073b01, use the following methods:

1. Remove third-party security software

In order to fix the error 0x80073b01, the first thing you need to remove any third-party antivirus install on your computer. It’s because the 3rd party security software is known to block the system file services so chances are there that this is the problem. To remove the security software, use the below steps:

• Press the Windows+I to launch the Settings app.
• On the next page, select Apps > Apps & Features on the left column.
• Then move to the right pane, scroll down and search for the antivirus program installed on your system.
• Once you find it, click on it and select the Uninstall button.
• When a new dialog appears, click the Uninstall option to confirm it.

Once you complete the above process, restart your computer and see if Windows Defender is now working properly. If not, continue to the next workarounds.

2. Modify the Registry Editor

This solution requires you to modifying some registries entries. But before going to the steps, make sure you know the things you’re going to do. It’s because incorrectly using Registry Editor files can be dangerous and can cause some serious issues in your computer. So, if you’re comfortable with the Registry Editor, use the steps otherwise skip this method.

• Click on Start, type regedit, and press the Enter key to open the Registry Editor.
• If UAC prompts on the screen and asks for your permission, click Yes.
• Inside the Registry Editor window, expand the left-side navigation to the following:

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/WindowsNT/Current Version/Image File Execution Options
HKEY_CURRENT-USER/Software/Microsoft/Windows/Current version/Policies/Explorer/DisallowRun

• Once you’re at the given address, delete the msseces.exe entry from both of them.
• Restart your device and your problem should be fixed now.

3. Re-register Windows Defender DLL files

Another method you can try to solve this problem by re-registering the Windows Defender DLL files. Here are the steps to do so:

• Press Windows+X keys and select Command Prompt (Admin) from the list.
• If UAC prompts on the screen and asks for your permission, click Yes.
• Inside the Command Prompt window, type the following command and press Enter after each one:

regsvr32 wuaueng.dll
regsvr32 wucltui.dll
regsvr32 softpub.dll
regsvr32 wintrust.dll
regsvr32 initpki.dll
regsvr32 wups.dll
regsvr32 wuweb.dll
regsvr32 atl.dll
regsvr32 mssip32.dll

• After re-registering the DLL files, restart your computer and see if it fixed the issue.

4. Run SFC scan

Sometimes corrupted or damaged system files might be also responsible for such an issue. So, the next method suggests you run the System File Checker utility as it will restore if any broken system files. Here are the steps you can use to run this tool:

• Open Command Prompt as Administrator.
• Inside the command prompt window, type the command given below:

sfc /scannow

• Press Enter to start the scanning procedure.

5. Enable Windows Defender Services

If you’re still facing the Error Code 0x80073b01 on your computer, chances there is that some Windows Defender services are stopped. Here are the steps you can use to make them enable:

• Open the Run dialog box using the Windows+R keys.
• In the dialog box, type services.msc and hit Enter.
• Scroll down to the Windows Defender Antivirus Service and then double-click on it.

• Inside the properties window, set the Startup type to Manual using the drop-down menu. Also, click on the Start button to make the Service status – Running.
• Click Apply > OK.

After enabling the Windows Defender Antivirus Service, also open some other services and check their status:

1. Windows Defender Firewall – Automatic
2. Windows Defender Advanced Threat Protection – Manual
3. Microsoft Defender Antivirus Network Inspection Service – Manual

I hope some of the methods in this post helped you to resolve the Windows Defender Error Code 0x80073b01. In case you have any queries or suggestions, let’s know in the comment section. 

Question

Issue: How to Fix Error Code 0x800b0100 on Windows 10?

Hello. I could not install Windows Updates due to the error 0x800b0100 for quite a while. After some time, the error was resolved automatically and I managed to install the all available updates.

The problem is that after the installation of updates, I cannot run a scan with Windows Defender due to the same 0x800b0100 error code. Is there something I could do or should I wait for the bug to be resolved automatically? Would highly appreciate your help!

Solved Answer

Initially, the Error Code 0x800b0100 was referred to as Windows Update^[1] error. That’s because the only place it tended to appear was Windows Update service blocking the Check for Updates process and preventing a PC’s owner from installing any updates. In this case, specialists recommend restarting Windows Update services or disabling Proxy service temporarily.

Unfortunately, but currently, the error 0x800b0100 appears under different circumstances. Few Windows 10 users reported that this bug strikes Windows Defender,^[2] which forcefully stays idle all the time. The icon of Defender is greyed out and the program, therefore, cannot be launched. Whenever the PC user is trying to turn it on, the error message 0x800b0100 shows up saying:

An error has occurred in the program during initialization. If this problem continues, please contact your system administrator.
Error code: 0x800b0100

First of all, we would strongly recommend you to check the system for malware.^[3] That’s because malicious software may be blocking Windows Defender to prevent recognition and deletion.

Thus, use a professional anti-malware utility and let it do the trick. To make it easier for you to decide which security tool to use, we would recommend installing ReimageMac Washing Machine X9. It’s a powerful PC optimization utility, which has a built-in Avira Antivir engine, so by using it, you will kill two birds with one stone.

There are four different methods applicable to the error code 0x800b0100 fix. As we have already mentioned, you should run a scan with a professional anti-malware. If the scan did not report any virus, the start from resetting Windows Update components, then run the System File Checker.

If these options did not help, you should try setting Windows Defender’s process as automatic and performing a clean boot. The latter method will let you isolate the problematic application, which may be confronting with Windows Defender.

Method 1. Restart Windows Update components

If you are dealing with the 0x800b0100 error while installing Windows Updates, you should try to restart Windows Update components. However, resetting Windows Update Components requires the modification of some Windows Registry entries. Therefore, it’s advisable to make registry backups.

• Right-click on Windows key and select Command Prompt (Admin).
• If a UAC shows up, click OK to proceed.
• By typing the following commands you will stop BITS, Windows Update, Cryptographic, MSI Installer services. Don’t forget to press Enter after each of them:
  net stop bits
  net stop wuauserv
  net stop appidsvc
  net stop cryptsvc

• Then type Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\qmgr*.dat” command to delete qmgr*.dat files.
• Once done, copy and paste cd /d %windir%\system32 command and press Enter to execute the command.
• To re-register BITS and Windows Update files, you will have to type all the commands (followed by Enter) provided below:
  regsvr32.exe atl.dll
  regsvr32.exe urlmon.dll
  regsvr32.exe mshtml.dll
  regsvr32.exe shdocvw.dll
  regsvr32.exe browseui.dll
  regsvr32.exe jscript.dll
  regsvr32.exe vbscript.dll
  regsvr32.exe scrrun.dll
  regsvr32.exe msxml.dll
  regsvr32.exe msxml3.dll
  regsvr32.exe msxml6.dll
  regsvr32.exe actxprxy.dll
  regsvr32.exe softpub.dll
  regsvr32.exe wintrust.dll
  regsvr32.exe dssenh.dll
  regsvr32.exe rsaenh.dll
  regsvr32.exe gpkcsp.dll
  regsvr32.exe sccbase.dll
  regsvr32.exe slbcsp.dll
  regsvr32.exe cryptdlg.dll
  regsvr32.exe oleaut32.dll
  regsvr32.exe ole32.dll
  regsvr32.exe shell32.dll
  regsvr32.exe initpki.dll
  regsvr32.exe wuapi.dll
  regsvr32.exe wuaueng.dll
  regsvr32.exe wuaueng1.dll
  regsvr32.exe wucltui.dll
  regsvr32.exe wups.dll
  regsvr32.exe wups2.dll
  regsvr32.exe wuweb.dll
  regsvr32.exe qmgr.dll
  regsvr32.exe qmgrprxy.dll
  regsvr32.exe wucltux.dll
  regsvr32.exe muweb.dll
  regsvr32.exe wuwebv.dll
• To reset Winsock, type netsh winsock reset and netsh winhttp reset proxy commands. Press Enter after each of them as usually.
• Finally, restart BITS, Windows Update, Cryptographic, MSI Installer services by entering the following commands each followed by Enter:
  net start bits
  net start wuauserv
  net start appidsvc
  net start cryptsvc

Method 2. Run sfc / scannow and DISM tools

To check and fix corrupted system files, you should perform the following steps:

• Click Windows key + X and select Command Prompt (Admin).
• Type sfc /scannow command and press Enter.

• Then type the following commands and hit Enter after each of them:
  DISM.exe /Online /Cleanup-image /Scanhealth
  DISM.exe /Online /Cleanup-image /Restorehealth
• Close Command Prompt and reboot the system.

Method 3. Perform a Clean Boot

To isolate the culprit of the 0x800b0100 error, we would strongly recommend trying a clean boot. This way, you’ll find out if your PC contains incompatible third-party software:

• Press Windows key + R, type msconfig, and press Enter.
• Open Services tab and check the Hide All Microsoft Services box.
• Select Disable all and then open Startup tab.

• Select Task Manager and disable all processes on it. For this purpose, right-click on each of them and select Disable.
• Then press OK and reboot your PC.

If this method helped to fix 0x800b0100 error, enable third-party apps one by one and check which one causes Windows Defender’s malfunction. Once you find a particular app, enable other processes. For this purpose, perform the steps indicated above except that you have to uncheck Hide all Microsoft Services box on the Services tab.

Method 4: Set Windows Defender Service to Start Automatically

• Press Windows key + R, type services.msc, and press Enter.
• Find Windows Defender Antivirus Service and double click on it.
• Open Startup Type and set it to Automatic.

• Click Apply and OK to save the changes.

Repair your Errors automatically

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