How to Fix Windows Update Error 0x800705b4?

Microsoft’s built-in updating tool, Windows Update, makes updating to the latest version of Windows very easy. With every new update comes the latest features, security patches, and bug improvements. However, in some cases, we may face some errors when trying to update. The errors are usually represented as hexadecimal codes. For example,the 0x800705b4 error.

Now, the cause of the 0x800705b4 error may due to several reasons. However, the main culprits are Windows Security, device drivers, and corrupt registry files. This error is a common problem but the solution may vary from person to person. Hence, we’ll provide a multitude of ways you can go about solving this problem. We recommend you try out all of the methods listed below until your issue is resolved.

How To Fix 0x800705b4 Error?

A guide to fixing the 0x800705b4 will be explained below. Note, before attempting these methods, try a simple system restart. Sometimes, doing this may solve the error itself and save you a whole lot of time. Now, just follow the instructions below for each method and you should be able to get your PC updated to the latest version without any trouble.

Method #1: Run Windows Update Troubleshooter

Now, this is probably the easiest fix as Windows will attempt to diagnose and solve the issue on its own. All we have to do is run the troubleshooter for Windows Update. You can do this by following the simple steps listed below:

  1. In your desktop search bar search for “Troubleshoot” and open the Troubleshoot Settings.
  2. Now select “Windows Update” and click on the “Run the troubleshooter” button.
  3. Windows will now begin detecting the problems.
  4. The problems detected will be reported, the statement presented may vary from user to user.
  5. If the fix is simple, such as restarting your PC, go ahead and do that. On the other hand, Window Update may report that the solution has been fixed.

In some cases, the troubleshooter will not be able to solve your issue. In this case, you’ll want to try some of the other methods listed below.

Method #2: Remove Third-Party Antimalware Tools

Windows has this feature that turns off Real-Time Protection(RTP) if any other third-party antimalware software is in use to prevent software conflicts. However, if RTP is turned off it will prevent Windows Update from updating Security patches properly. As a result, we obtain a 0x800705b4 error. Hence, to solve this error we have to disable or remove any third-party antimalware software that is present. When doing this we’ll have to use a proper cleanup/removal tools to get rid of the programs properly. Normal uninstall of the antimalware software won’t suffice and will leave remnants behind that can cause issues with Windows Update.

  1. Download and Install Revo Uninstaller. Revo will scan for left-over files even after the uninstall is completed.
  2. Click the uninstaller tab and double click all the anti-malware tools you want to remove and confirm your uninstallation.
  3. Select Uninstall and Revo will begin the process. Click next when completed.
  4. Now Revo will display all leftover Registry items. Click Select All and click on Delete.
  5. Next, Revo will display all the files and folders that were left behind, click Select All then press Delete.
  6. Click Next to complete your thorough uninstallation of third-party antimalware software.
  7. Now, you will have to turn on Real-Time Protection. You can do this by right-clicking Start>Settings>Update & Security>Windows Security>Virus & threat protection. Click on Manage Settings and turn ON the toggle button for Real-Time Protection.
  8. You can now try running your Windows Update again and the 0x800705b4 error should be resolved.

Method #3: Ensure Windows Defender Service Is Running

You can view all of the services running on your PC from the Windows Service Manager. It is vital that Windows Defender’s service is running properly to prevent the 0x800705b4 error from occurring. We can check this by following the instructions listed below:

  1. Press the Windows + R key together.
  2. In the Run dialog box, type services.msc and press Enter.
  3. It may take a few seconds to open the Services window. When it does locate Windows Defender Service.
  4. Ensure that the status of “Windows Defender Antivirus Service” is labeled as “Running”.
  5. If it is isn’t. Right-click the service and press Start.

In some cases, force Starting the Windows Defender service may yield an error. Hence, right-click the service and select properties. Now make sure the Start-up Type is set to automatic and restart your computer. Now try downloading the updates and see if the error persists.

Method #4: Run The System File Checker (SFC)

The System File Checker is a utility built into Windows that checks for any file corrections. It scans the entire operating system for the integrity of all files and replaces incorrect, corrupt, or damaged versions. This is fairly easy to do, just follow the steps below.

  1. Search for Command Prompt from the Start menu, Righ-Click it and Run as Administrator.
  2. Now enter the command “sfc /scannow”
  3. In most cases, SFC should be able to repair all damaged files and you should be able to update your Windows without any error.

Method #5: Run The DISM Tool

The DISM or Deployment Image Servicing and Management (DISM.exe) is a command-line tool that can be used to check the system’s health and restore files.

  1. Run Command Prompt as Administrator.
  2. In the command window enter these commands one by one:
  3. DISM.exe /Online /Cleanup-image /Scanhealth
  4. DISM.exe /Online /Cleanup-image /Restorehealth

Please note, this process can take up to 20 minutes, so please do not cancel it midway.

Final Words:

The 0x800705b4 error is a tricky one as the solution for it may be different for everyone. However, we assure you that the following methods above are the most common fixes for getting rid of this error. If you have any questions or doubt please post them in the comments section below.

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