How to Repair: Windows Update Error 9C59

If you are a Windows user, you already know how important Windows updates are. They fix system problems, fix bugs, speed up many system processes, and are generally a good way to optimize your PC. In most cases, Windows updates are installed automatically without any errors.

However, some Windows users have recently encountered error code 9C59 when trying to install a certain update or when trying to update Internet Explorer.

If you too have recently encountered this error code, you’ve come to the right place. In today’s article, you will learn how to fix Internet Explorer error 9C59 when updating.

What causes the Windows Update error 9C59?

The third-party conflict caused by Kaspersky: Of all the third-party AV programs that are reported to have problems with IE 11, Kasperksy is the most common culprit. If this problem occurs when using Kaspersky as the default security package, you can solve it by uninstalling Kaspersky and removing any remnants of previous attempts to install IE 11 before reinstalling the browser properly.

Update limitation: Many Windows 7 users have been unable to install Internet Explorer 11 due to an obvious limitation indirectly caused by Windows Update. In this case, you can solve the problem by using a standalone installer to install the problematic browser on Windows 7.

Damaged Windows Update component: One of the most common causes of this particular problem is a damaged Windows Update subcomponent. Several affected users in a similar scenario were able to resolve the problem by performing a sequential scan of the SFC and DISM to restore the corrupted instances.

Damaged system file: In some cases, this error may be a direct result of a corrupted base system file, which affects the operating system’s ability to install new updates. In this case, you must update all Windows components using a process such as a clean install or a restore install.

TCP or IP blocks: another possible scenario, exclusively for Windows 10, is when corrupt temporary data interferes with an update of existing software signed by Microsoft. In this case, an old version of Internet Explorer (usually Internet Explorer 9) must be uninstalled before creating a .bat file that can delete the remaining files from the previous installation.

How to Troubleshoot the Windows Update error 9C59?

Performing DISM and SFC scans

Windows is prone to errors, and optimizing your system can be tedious as well as risky. Fortunately, Windows has some handy troubleshooting utilities that you can safely turn to for solutions. If the problem is caused by a corruption error or a bug in the system, you can solve it with a DISM scan and sfc.

  1. Type cmd in the search box and click Run as administrator to run the advanced command line.
  2. In the command prompt window, type the command below and press Enter to run.
    sfc /scannow
  3. If the system file checker detects any problems, it resolves them.
  4. Then open a command prompt by running the first step again.
  5. Now type the command below at the extended command prompt and press Enter.
    DISM /Online /Cleanup-Image /RestoreHealth
  6. Finally, restart your computer and check if the error has been fixed.

Reinstalling Windows

If the above method didn’t work, it means that the system corruption error cannot be resolved using the standard troubleshooting steps. In this case, it is best to uninstall Windows and install a fresh copy. This will solve all operating system problems, including the one we are dealing with.

Install Internet Explorer 11 using a standalone installer

If the Windows Update 9C59 error appears on the screen when you try to install or update Internet Explorer 11 on your computer, the update components may be faulty or corrupt.

  1. Open your default browser and go to the Internet Explorer 11 download page.
  2. Scroll down, find the hyperlink corresponding to your version of Windows, and download it.
  3. Open the downloaded file and, when prompted for user account control, click Yes.
  4. Finally, follow the instructions on the screen to complete the installation.

Hopefully, installing Internet Explorer 11 with the standalone installer will solve the problem on your computer.

Frequently Asked Questions

  1. Install the necessary updates for Internet Explorer.
  2. Install Internet Explorer using an offline installer.
  3. Delete unnecessary files with Disk Cleanup.
  4. Uninstall all previous versions of Internet Explorer.

Error code 9C59 can occur when you try to install Internet Explorer 11 (or IE10) through Windows Update. When this problem occurs, Windows Update fails with the following error message: "Some updates have not been installed - error detected: Code 9C59 - Windows Update encountered an unknown error."

  1. Run the Windows Update Troubleshooter.
  2. Restart the services related to Windows Update.
  3. Run the System File Checker (SFC).
  4. Run the DISM command.
  5. Temporarily disable your antivirus program.
  6. Restore Windows 10 from a backup.

If you're still having trouble updating or installing Windows 10, contact Microsoft support. This may indicate that an incompatible application installed on your computer is blocking the upgrade process. Make sure that any incompatible apps are uninstalled, and then try the update again.