I think this is a Microsoft bug. Please try the following.
Download Windows Updates with PowerShell
1. Download
PSWindowsUpdate.zip from the following page to your desktop.
Script Windows Update PowerShell Module
2. Once it is downloaded,
right-click on the file, select
properties and check the
Unblock checkbox and click OK.
3.
Right-click the file again and chose
Extract...Keep the default path and ensure "
Show extracted files when complete" is checked and click the
Extract button.
4. A window will open and you will see a
folder named
PSWindowsUpdate.
5. Copy this folder and paste it into the followinig folder: C:\windows\system32\WindowsPowerShell\v1.0\Modules
6. Click Continue if a confirmation message comes up to continue with the copy.
7. Click your Start button and type Windows Powershell into the search box. Several results will come up. Right-click on the one named Windows Powershell ISE to select it and then at the bottom of the screen, click the Run as administrator icon. If a UAC prompt comes up, answer Yes to allow.
8. Once the powershell command prompt comes up, copy/paste the following into the command prompt and hit enter.
Set-ExecutionPolicy RemoteSigned
9. Answer Yes at the prompt that comes up.
10. Next, copy and paste the following into the powershell command-prompt and hit enter.
Import-Module PSWindowsUpdate
11. Next, copy and paste the following into the powershell command-prompt and hit enter.
Get-WUInstall
12. The rest should be automated with some prompts. For example you may be asked to type
Y to reboot. If it does go ahead and do this when able.