Re: Windows Update 2019-01 Preview Quality Rollup KB4480955
For what it's worth, I have NEVER installed any of the PREVIEW updates... which basically is just an early version of NEXT MONTH's "regular" update. They have enough headaches with the regular ones... so I say let other people be the guinea pigs for the previews.
Windows 7 Pro SP1 (64-bit), avast! v17 Free, MBAM3 Pro, Windows Firewall, OpenDNS Family Shield, SpywareBlaster, MVPS HOSTS file, MBAE Premium, MCShield, WinPatrol PLUS, SAS (on-demand scanner), Zemana AntiLogger Free, IE11 & Firefox (both using WOT [IE set to WARN, FF set to BLOCK]), uBlock Origin, CryptoPrevent.
[I believe computer-users who sandbox (Sandboxie) are acting prudently.]