Fix: Windows 10 update error 0x80072af9

By: Ivan Jenic
3 minute read

With the introduction of Windows 10, Microsoft promised more stability and better support for all users. Since 2015, the company has stayed up to the task. At least, most of the time. However, frequent updates occasionally have their own issues.

Namely, some mandatory updates are provoking various problems. The update error code 0x80072af9 is just one of them. This update’s purpose is to improve the overall security in Microsoft Office. However, as the case proved, it can have the reverse impact on the system. It is a known culprit for crashes of Office programs, and system drags. Today, we’ll try and help you resolve this issue.

How to fix Windows 10 update error 0x80072af9

1. Try updating your system

For starters, you should try and check for updates right away. Maybe the diligent Microsoft developers have prepared a fix and it is waiting for you to get it. To check for new KB (Knowledge Base) update, do as follows:

  1. Open Search Windows and type Windows Update.
  2. Click Check for updates.
  3. If there are some updates available, the system will install them after Active hours.

Have in mind that this will work only if there are no corrupted system files. If the problem persists, move on to a next step.

2. Check Windows for corruption

As we all know, updates are installed and stored on the system partition. Moreover, possible malware infection thrives on playing with those essential files. So, the files can get corrupted or deleted. As the matter of fact, they start working against you. So, we should check them out.

The first step you should take is scanning all partitions with Windows Defender or third-party antimalware software. Additionally, you’ll want to check files’ integrity with the command prompt. And this is the way to do it:

  1. In Windows Search type cmd
  2. Right-click Command Prompt and Run as administrator.
  3. In the command line type sfc/scannow

After the process ends, restart your PC. This should fix corrupted or incomplete files.

3. Clean up junk files

Additionally, you can use built-in Windows tools to clean up junk system files. Since those can cause a variety of issues due to conflicts with essential files, we should get rid of them. Have in mind that you can use even trusted third-party cleaners for this task. We’ll walk you trough the standard procedure with a built-in disk cleaner:

  1. Open Search Windows or press Windows key + R.
  2. Type cleanmgr (or Disk Cleanup) and open tool.
  3. Choose system partition (most of the time C:).
  4. Click Clean up System files.
  5. The process will clean junk files.

This way you kill two birds with one stone. The possible interfering files are gone and you freed up some space on system drive.

4. Uninstall the update

This is probably not the first nor the last time you installed a faulty update. Moreover, since Windows 10 updates on its own, there is a possibility that things can take a wrong turn. However, you can at least uninstall malfunctioning updates. In order to get rid of the faulty update, follow these instructions:

  1. In Search Windows type Windows Update.
  2. Open Windows update settings.
  3. Choose Update history.
  4. Select Uninstall updates.
  5. Find the update related to Microsoft Office.
  6. Right-click and select Uninstall.

That should be that. Restart your PC and check Office behavior after the update file is uninstalled.

5. Reinstall Office

At the end, since this error is related to Office and its apps, you can try and reinstall the whole package. This will at least give you a standpoint. If the problem is persistent after you’ve performed all of the above steps, you can try a system restore feature. It will cost you some time and nerves. But, it will fix even the most relentless issues.

These were our solutions for Windows 10 update error 0x80072af9 . We certainly hope you managed to resolve them. In addition, if you are having any doubts or questions, be sure to share them in the comments section bellow.

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