WSClient.dll Error in Windows 10

A misconfigured Windows Store likely to cause following error in Microsoft Windows 10 operating system:

Problem starting WSCLIENT.dll WSCLIENT.dll is not a valid Win32 application

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Alternative manual troubleshooting steps are given below:

Disable Faulty Task

As the error relates to Windows Store disabling the faulty task WSRefreshBannedAppsListTask resolves your issue. Use the Task Scheduler program as shown below:

1. Type “Task Scheduler” in the Search Box.


2. Open it from Search Results.


3. Expand the following from the left hand side panel:

  • Task Scheduler (Local) | Task Scheduler Library | Microsoft | Windows | WS


4. Right click “WSRefreshBannedAppsListTask” and choose Disable option from the context menu.

Reset Windows Store

As you can probably guess, the Windows Store needs to be reset to its defaults. WSReset.exe tool is located in the C:\Windows\System32 directory and helps troubleshoots common problems associated with the Windows Store.

1. Type “CMD” in the Search Box.

2. Right click “Command Prompt” from Search Results; choose “Run as administrator”.


3. Execute below command:

  • Wsreset


4. After successful completion, exit the window.

Delete Faulty Task Using Command-line

If disabling automatic refreshing the banned Windows Store apps list task doesn’t fix, you might want to delete it using the command-line. You must be logged in from the Administrator account as the Command Prompt needs administrative privileges.

1. Open Elevated Command Prompt.

2. Execute below command:

  • schtasks /delete /TN “\Microsoft\Windows\WS\WSRefreshBannedAppsListTask” /F

3. A message will appear on your screen that the task named WSRefreshBannedAppsListTask inside \Microsoft\Windows\WS was successfully deleted.

Use the Troubleshooting Options

Microsoft Windows 10 contains a set of Troubleshooting options that diagnose known system issues. WSClient.dll error in Windows 10 might be fixed using the Troubleshooting wizard.

1. Click the Start button.

2. Type “Control Panel” in the Search Box.


3. Open it from Search Results.

4. Click System and Security | Security and Maintenance.


5. Click Troubleshooting icon.


6. Click the “View all” link in left hand side panel.


7. Scroll down the list of computer problems displayed on your screen. Click “System Maintenance”.


8. Follow the on-screen instructions.

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