How to Fix Windows 10/11 Store Error 0x803FB005

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The Windows 10/11 Store Error 0x803FB005 is an issue that hinders users from installing selected applications from the MS Store. Due to this error, you may be unable to install vital applications needed by your OS.

What Is the Error 0x803FB005 on Windows 10/11

This issue occurs due to several reasons. Hence, there is no specific cause leading to the Windows 10/11 Store Error 0x803FB005. Many factors can be responsible for this issue such as corrupt system files, a malfunctioning MS Store app, and others. So, you must try a few solutions when attempting to fix the issue.

Cause of the Windows 10/11 Store Error 0x803FB005

The several culprits that may lead to the Windows 10/11 Store Error 0x803FB005 include:

  • A missing hotfix related to the issue – This particular issue has already been addressed by Microsoft in a patch released beginning of 2019. In such a scenario, it’s best to bring your system OS version up to date by installing all pending updates.
  • Interference of 3rd-party security software – This occurs when the installed third-party security software is overprotective. The solution is to disable real-time protection or uninstall the software entirely.
  • Corrupt Windows Store – The Store app can malfunction if corrupted by malware. A glitch can also make the MS Store malfunction. The best approach to resolving the issue is to reset the Windows Store via the terminal or GUI.
  • Corrupt System Files – Many ways can lead to system file corruption such as manipulation of files by an inexperienced person or damage caused by malware. In such a case, it’s best to first perform a full system security scan before repairing the corrupt system files.

Windows 10/11 Store Error 0x803FB005 Solutions

Since the issue is caused by various factors, we have outlined several solutions and presented them according to their efficiency and complexity level. If you’re not sure of the cause, we advise applying these fixes based on their order.

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To fix the Windows 10/11 Store Error 0x803FB005 issue, apply these solutions:

Solution #1: Launch the MS Store Troubleshooter

Before you attempt to fix using any other alien tools, first check if your Windows build is equipped enough to automatically fix the issue. Windows 10/11 comes equipped with MS Store troubleshooter. The tool is designed to scan the Store application for any inconsistencies, then repair them.

Here is how you can run MS Store troubleshooter to fix Windows 10/11 Store Error 0x803FB005:

  1. Launch the Run dialog box by simultaneously pressing Windows + R keys. In the text field, type “ms-settings:troubleshooter” (no quotes) before hitting the Enter key to launch Troubleshooting tab under the Settings window.
  2. Now, on the right-hand pane, click on Windows Store Apps under the Get up and Running tab before selecting Run the Troubleshooter.
  3. Wait for the initial scan process to complete.
  4. When done, if an issue was found, a repair strategy is automatically picked and suggested. Click on Apply this Fix and follow the prompts.
  5. Once done, close the troubleshooter window and reboot your system for the changes to take effect.

In the next startup, check if the error has been fixed by repeating the action that previously triggered it.

Solution #2: Download and Install all Pending OS Updates

As indicated earlier on, the issue may occur due to OS glitch that was addressed in the first quarter of 2019. If your computer is already installed with the latest updates then you may skip to the next solution. Otherwise, apply all pending updates to bring your computer up to speed. Here is how to do so:

  1. Launch the Run dialog box by simultaneously pressing Windows + R keys. In the text field, insert “ms-settings:windowsupdate” (no quotes) and hit Enter to launch Windows Update tab under the Settings window.
  2. On the right-hand pane, click on Check for Updates and the system will begin to scan for any pending updates.
  3. Install all picked updates. If system reboot occurs, make sure you return to the same window by following Steps 1 and 2.
  4. Once all the pending updates have been installed, restart the computer and check if the issue has been resolved in the next startup.

Solution #3: Disable Third-Party Anti-virus

A strict security suite tends to block outside connections that Microsoft uses when downloading an application. To solve the issue if related to this cause, you must disable your third-party security suite. Depending on the suite you have installed in your system, the steps to removing it may slightly differ. However, with the guidelines, you can easily uninstall any of them.

Here is how you can uninstall a program:

  1. Right-click on the Start menu and select Apps & Features from the context menu.
  2. Once the Apps & features tab has opened under the Settings window, scroll down the list of apps installed on your system until you see the third-party security suite you wish to uninstall.
  3. Click to highlight any app related to the suite and select the Uninstall button.
  4. Follow the prompts to complete the Uninstallation process to all apps and features related to the security suite.
  5. Restart the computer when done. Check if the error persists.

Solution #4: Reset MS Store

If a file used by MS Store goes missing due to a virus or is quarantined by a third-party security tool, the Windows 10/11 Store Error 0x803FB005 is bound to occur. Resetting all MS Store components will help restore all files to their original state. Here is how you can reset MS Store components:

  1. Launch the Run dialog by simultaneously pressing the Windows + R keys. In the text field, type “cmd” (no quotes) and simultaneously press Ctrl + Shift + Enter keys to launch elevated Command Prompt. If the User Account Controls prompts, select the Yes button to give admin privileges.
  2. Now, in the elevated Command Prompt, insert the command line below and hit the Enter key:
  3. Once the command has been processed, reboot the machine and check if the issue has been solved in the next startup.

Solution #5: Perform a Repair Installation

If none of the listed solutions come right, then, you might be dealing with a server system corruption. In such instances, the best you can do is perform a repair installation. This action resets all Windows OS components to factory formats without deleting your files.

Here is how to perform a repair installation:

  1. Download the official Windows 10/11 ISO file from the MS site. It is also possible to download Windows 10/11 without a media creation tool.
  2. Save the file to your Desktop.
  3. Mount the ISO to access its files.
  4. Double-click on the mounted ISO to access files and locate the one labelled setup.exe. Double-click on it and follow the prompts to perform a repair installation.

In most cases, glitches are caused by dubious applications obtained from untrustworthy sites. To avoid such kind of errors in future, it is best to keep your system’s operation software updated. You should also have a trustworthy anti-malware security tool running in the background all the time.

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