Doesn't appear to be a known issue for this. Grab a copy of the windows update log and upload it.
You can run the following powershell command then upload the WU.zip file on your desktop
Get-WindowsUpdateLog -LogPath "$($env:USERPROFILE)\Desktop\WU.log"; Compress-Archive -Path "$($env:USERPROFILE)\Desktop\WU.log" -DestinationPath "$($env:USERPROFILE)\Desktop\WU.zip";