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MajorGeeks.Com » Overview» Tutorials and Video Guides » How to Fix Microsoft Security Error 0x80073b01

How to Fix Microsoft Security Error 0x80073b01

By Timothy Tibbetts

on 06/26/2023

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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.

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:

  • Windows Defender Firewall – Automatic - Started
  • Windows Defender Advanced Threat Protection – Manual
  • Microsoft Defender Antivirus Network Inspection Service – Manual
  • Microsoft Defender Antivirus Service – Manual.

    3: Microsoft Security Error 0x80073b01 - Run System File Checker

    Windows 10, Windows 8.1, or Windows 8 users will need to first run the Deployment Image Servicing and Management (DISM) tool before running the System File Checker. DISM will use Windows Update to provide any files that are needed to fix corruption. If you skip this step, System File Checker might not work. Windows 7 and Vista users can skip this step.

    You will need to first open the Command Prompt or PowerShell as administrator.



    Type in DISM.exe /Online /Cleanup-image /Restorehealth and press enter. This may take a few minutes.

    All you need to do is type in sfc /scannow and press the Enter key.



    System File Checker will now scan for and replace files from the Windows cache, typically located at C:\Windows\System32\dllcache.

    4: Microsoft Security Error 0x80073b01 - Re-Register DLL

    Open PowerShell or Command Prompt as administrator and type in the following lines:

    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

    Reboot.

    Similar:
  • What's the Best Antivirus and Is Windows Defender Good Enough
  • 4 Ways to Turn On or Off Windows Defender Real-time Protection
  • Windows Device Performance & Health Explained
  • Make Windows Defender Run a Full Scan, Not a Quick Scan
  • How to Manage Windows Defender Antivirus Found Threats
  • How to Change Windows Defender Max CPU Usage
  • How to Enable Possibly Unwanted Applications Protection With Windows Defender
  • Hide the Windows Defender Security Center Icon on the Windows 10 Taskbar
  • How to Add Windows Defender to the Context Menu in Windows 10

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