On 01/19/2018, WU said KB4055532 (2018-01 Security and Quality Rollup for .NET Framework) was available, but WSUSO did NOT download or install it.
On 01/26/2018, WU said KB4074906 (Update for Microsoft .NET Framework 4.7.1 on Windows 7 SP1 and Windows Server 2008 R2 SP1) was available, bit WSUSO did not download or install it.
On 01/20/2018, WU said KB4052623 (Anti-malware pack) was available, but WSUSO did not download or install it.
On 02/02/2018, WU said KB4058258 (2018-01 Cumulative Update for Windoze 10 version 1709) was available, but WSUSO did not download or install it.
Why?