Microsoft released Windows 10 Preview build 11099 for Insiders on the Fast Ring last week, and the company immediately warned us about accompanying issues. And some users discovered another issue in the second Windows 10 Preview Redstone build, but this time, we have a proper solution.
Reportedly, a few users said that they encounter a strange bug when they boot up their computers. Namely, an error message saying “error in wsclient.dll Missing entry: RefreshBannedAppsList” appears on every startup.
The message doesn’t affect the system, as it disappears when you close it, but since it shows up on every boot, it’s really annoying.
Fix WSClient.DLL error in Windows 10 build 11099
WSClient.DLL errors can sometimes occur, and speaking of these errors, here are some common issues that users reported:
- WSClient.dll error Windows 8.1 – This issue can appear on Windows 8.1 as well. Since Windows 8.1 and 10 are so similar, you should be able to apply all of our solutions to Windows 8.1 as well.
- WSClient.dll error has occurred – This is just a variation of the original error, and in most cases you can fix the issue by running the WSReset command.
- WSClient.dll refreshbannedappslist – Sometimes certain tasks in Task Scheduler can cause this issue to appear, but you can fix it by finding and removing the problematic task.
- Rundll32.exe WSClient.dll wsptlr licensing – If this error message occurs, you might be able to fix the issue simply by re-registering the problematic file.
- WSClient.dll not found – In some cases, this file might not be even present on your PC. To fix that, perform SFC and DISM scans. In case that doesn’t work, you might have to reinstall your system.
Solution 1 – Perform a WSReset command
If you’re having issues with WSClient.DLL, you might be able to solve them simply by running a WSReset command. This is quite straightforward to do, and you can do it by following these steps:
- Open Win + X menu. You can do that by right-clicking the Start Button or by using Windows Key + X shortcut.
- Choose Command Prompt (Admin) or PowerShell (Admin) from the menu.
- Enter wsreset and press Enter.
After a couple of moments, the process will be finished and the issue should be resolved.
Solution 2 – Disable WSRefreshBannedAppsListTask task
According to users, sometimes certain tasks in Task Scheduler can cause problems with WSClient.DLL. However, you can fix this issue simply by disabling these tasks. To do that, follow these steps:
- Press Windows Key + S and enter scheduler. Select Task Scheduler from the list of results.
- Under Task Scheduler, go to Microsoft>Windows>WS.
- Right click on the task WSRefreshBannedAppsListTask, and choose Disable.
After disabling this task, check if the problem is still there. In case this task isn’t available in Task Scheduler, you should skip this solution and move to next one.
It’s also worth mentioning that you can remove this task using the Command Prompt. If you don’t want to deal with Task Scheduler and search for the specific task manually, you can just remove it by running a single command. To do that, follow these steps:
- Start Command Prompt as administrator. We showed you how to do that in the previous solution.
- When Command Prompt starts, run the schtasks /delete /TN “\Microsoft\Windows\WS\WSRefreshBannedAppsListTask” /F command.
Both methods are similar, but if you’re an advanced user or if you want to do it quickly, you might use the command line method.
Solution 3 – Re-register the problematic DLL file
Sometimes you might be able to fix the problem with WSClient.DLL simply by re-registering the problematic DLL file. This process is relatively simple and you can do it by following these steps:
- Start Command Prompt as an administrator.
- When Command Prompt starts, run the following commands:
- regsvr32 /u WSClient.dll
- regsvr32 /i WSClient.dll
After running both of these commands, you’ll re-register the problematic DLL file and the issue should be resolved.
Solution 4 – Run SFC and DISM commands
In some cases, problems with WSClient.DLL can occur because your Windows installation is damaged. However, you might be able to repair it by performing an SFC scan. This is relatively simple, but you can do it by following these steps:
- Start Command Prompt as an administrator.
- Now run the sfc /scannow command.
- The SFC scan will start. Keep in mind that this scan can take about 15 minutes, so don’t interfere with it.
Once the scan is finished check if the problem is still there. In case the issue is still present, or if you weren’t able to run the SFC scan, you’ll have to use DISM scan instead. To do that, just follow these steps:
- Open Command Prompt as an administrator.
- Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter to run it.
- DISM scan will now start. The scan can take up to 20 minutes, so don’t interfere with it.
Once the scan is completely finished, check if the problem is still there. If you weren’t able to run SFC scan before, perhaps you should try to run it again and check if that solves the issue.
- Read also: Fix: DISM failed on Windows 10
Solution 5 – Change your DNS servers
Your DNS servers play a large role, and sometimes issues with your DNS can cause WSClient.DLL error to appear. Several users reported that they managed to fix this issue simply by changing their DNS servers. This is a simple task, and you can do it by following these steps:
- Click the network icon on your Taskbar and choose your network connection from the menu.
- Now select Change adapter options.
- List of available network connections will appear. Right-click your network connection and choose Properties.
- Select Internet Protocol Version 4 (TCP/IPv4) and click the Properties button.
- Select Use the following DNS server addresses option. Enter 18.104.22.168 as the Preferred and 22.214.171.124 as the Alternate DNS server. Click OK to save changes.
After making this changes, you’ll switch to Google’s DNS and the problem should be resolved. If you want, you can use a different DNS server such as OpenDNS.
Solution 6 – Perform a System Restore
If the problem with WSClient.DLL started occurring recently, you might be able to solve it simply by performing a System Restore. In case you don’t know, System Restore is a built-in feature that allows you to restore your system to the previous state and fix all sorts of issues.
To perform a System Restore, you just need to do the following:
- Press Windows Key + S and enter system restore. Now select Create a restore point.
- When the System Properties window appears, click System Restore button.
- System Restore window will now open. Click Next to proceed.
- If available, check Show more restore points option. Choose the desired restore point and click Next.
- Follow the instructions on the screen to complete the restoration process.
After your PC is restored to the original state, check if the problem is still there.
- Read also: Fix: Windows 10 is Slow After System Restore
Solution 7 – Perform an in-place upgrade
In some cases, the only way to fix WSClient.DLL error is to perform an in-place upgrade. In case you don’t know, an in-place upgrade will reinstall Windows and update it to the latest version.
We also have to mention that this process will keep all your files and applications, which is also a big plus.
To perform an in-place upgrade, do the following:
- Download and run Media Creation Tool.
- Select Upgrade this PC now.
- Select Download and install updates (recommended) option and click Next. This step isn’t mandatory, so you can skip it if you want.
- Follow the instructions on the screen until you reach Ready to install screen. Select Change what to keep.
- Select Keep personal files and apps and click Next.
- Follow the instructions to complete the process.
Once the process is finished, you’ll have a fresh installation of Windows 10, and all your files and applications will be preserved, and the problem should be resolved.
Performing one of these solutions should solve the problem with WSClient.DLL error message. If you noticed some other bug in the build 11099, let us know in the comments.
Editor’s Note: This post was originally published in January 2016 and has been since completely revamped and updated for freshness, accuracy, and comprehensiveness
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