When planning Microsoft Windows Server Update Services (WSUS) implementations, the following article must be consulted:
It appears that in some cases there are insufficient permissions provided in the WSUS SMB/CIFS share, therefore receiving Windows event logs with event ID 10012:
The following SMB and NTFS permissions should be set on the top-level shared folder used for the WSUS repository:
The above permissions must be present at following levels:
• SMB share level (right click top level shared folder –> Properties
–> sharing –> advanced sharing –> permissions).
• NTFS level (right click top level shared folder –> Properties –> Security).
For a detailed list of disk, registry and IIS permissions and settings, review the following article: https://www.ajtek.ca/wsus/wsus-permissions-wsuscontent-registry-and-iis/.