Just found this Jacko. The link below was with the article and should give you a Q&A "walk through".
//This error code corresponds to access problem 'ERROR_ACCESS_DENIED'. This indicates there are insufficient permissions to modifying system settings and resources.
To resolve this error, try the following:
If the error occurs while running Windows Update, follow the steps on Microsoft's KB article. The article also recommends scanning for malware as malware can make permission changes.
Log into the system as an administrator (if and administrator account is available for you) and try to perform the update or install again.//
https://support.microsoft.com/en-us/help/10164/fix-windows-update-errors