0x800705b9 Install Error: 5 Fixes

Downloading the update manually should resolve this problem


Are you facing the 0x800705b9 error on your device? If yes, you are not alone, as many other users worldwide also complain about this error when you attempt to update the Windows on your computer.

This article will give you the best solutions to successfully troubleshoot this problem and get your device working without any problems.

What is error code 0x800705b9?

The 0x800705b9 error code is an error that occurs on a Windows device when you attempt to install an update on the computer. Users may be unable to install patches and benefit from improved system performance because of the Windows Update error code 0x800705b9.

Some common causes for this error are listed below.

  • Virus or malware attack – A virus attack can compromise the system’s proper functioning, leading to many errors, including the 0x800705b9 error code.
  • System file corruption – Since the Windows Update requires some system files to function properly, if these files are corrupt or damaged, you will experience this error.
  • Poor network connection – A weak or unstable internet connection can also cause this error code.
  • Hardware conflict – If there is a conflict between different hardware components, you will encounter this error.
  • Problem with update service – The Windows Update Service oversees Windows Update’s operation on your computer. As a result, a problem with these services may prevent Windows Update from running properly on your computer.

How do I fix Windows install error code 0x800705b9?

Try out these solutions first before going for our more comprehensive fixes.

  • Ensure you have a good internet connection – Verify your network connection is reliable, as a weak connection will always give this error.
  • Verify your disk space – Ensure you have enough storage on your C drive to get the latest system updates.
  • Restart your device – Rebooting your computer can help remove minor glitches and bugs that can potentially fix this error.

Try the solutions below if the steps above do not fix this error.

1. Run the SFC scan

  1. Hold the Windows + R keys together to open the Run dialogue, type cmd in the text field, hold Ctrl + Shift simultaneously, then hit Enter to open the command prompt with administrative privileges.
  2. In the command prompt, type the command below and hit Enter.
  3. Wait for the scan to complete and check if the 0x800705b9 error persists.

2. Run the DISM scan

  1. Hold the Windows + R keys together to open the Run dialogue, type cmd in the text field, hold Ctrl + Shift simultaneously, then hit Enter to open the command prompt with administrative privileges.
  2. In the command prompt, type the following commands below and hit Enter after each one.
    dism.exe /online /cleanup-image /scanhealth
    dism.exe /online /cleanup-image /restorehealth

  3. After the scan, reboot your system and check if the 0x800705b9 error has been fixed.

3. Run the Windows Update Troubleshooter

  1. Open Settings by holding the Windows + I keys simultaneously.
  2. Select the System tab on the left and choose Troubleshoot on the right-hand side.
  3. Click on Other troubleshooters.
  4. Click the Run button on the right side of Windows Update.
  5. After this process, reboot your computer and see if this step has fixed the 0x800705b9 error.

4. Manually download the update

  1. Navigate to the Microsoft Update Catalogue site, type your KB update name in the search bar on the right, and click the Search button.
  2. Once the results are out, click on the Download button for the KB Update you searched for.
  3. Open File Explorer by holding Windows + E together and look for the file you just downloaded (It should be in the Downloads folder).
  4. Once you locate the file, double-click on it to download.

5. Create more disk space

  1. Press the Windows key and choose Settings.
  2. Click System on the left pane, then select Storage on the right.
  3. Click the toggle for the Storage Sense option to enable it.
  4. Select Storage Sense again and choose Run Storage Sense now.
  5. This process will help free up disk space to accommodate Windows Update.

If you diligently follow through with the steps listed in this article, you can troubleshoot the 0x800705b9 error code and get your device up and running quickly.

The steps in this article have not been arranged in any particular order, so try as many solutions as possible until you find one that works best for you.

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David Ogbor
David is a tech guru with extensive knowledge in technical articles. He is passionate about writing and presents technical articles in an easy-to-understand format for easy comprehension. He aims to present easy solutions for day-to-day problems encountered while using PC. In his spare time, he likes traveling, playing sports, and singing.