Group B patching does need a little more effort than Group A. The number of patches, bugs, and fixes, and more bugs has been staggering in 2018. Some of us either paused, or uninstalled, to stay at December 2017 patching, and watched the chaos unfoldโฆ Some people may have made the jump to Group W permanently. After Total Meltdown was discovered, and I had rolled back to December patches, I considered that as a serious option. However, getting updated through April (which seems relatively safe at this point) is possibleโฆ if more complex than for Group A folks. I only have one 64 bit, i5, Sandy Bridge laptop to test, so I can only share what Iโve doneโฆ but Iโve considered all the applicable patches, bugs and fixes issued in 2018 (I hopeโฆ never totally confident).
Iโve completed the following, and all seems okay with my laptopโฆ I canโt tell you if there was a performance hit. It did take a long time for my desktop to load after I rebooted, and watching the dark screen sit there, with nothing on it, made me worry Iโd caused a BSODโฆ but I gave it timeโฆ and everything showed up, just like it was supposed to. Once the desktop was there, I waited for the CPU usage to settle down below 10%. Since then, everything has been working perfectly.
To get it done, I downloaded the appropriate updates. Then I turned off my internet connection, while installing them.
I checked for KB 4099950 in my installed updates. I couldnโt remember what Iโd done about it before this. I didnโt have it installed. If you installed KB 4099950 before it was updated on April 17th, uninstall it. If you arenโt sure, uninstall it (Woody is telling all Group A to uninstall, too. Group B isnโt being picked on). I downloaded and installed the updated version from the Windows Update Catalogue. It comes with two files, an .exe, and a .msu. I made sure both are in the same place (example, desktop). Ran the .msu. It ran the .exe automatically (I saw a brief black cmd window). Group A doesnโt have to install it, because it is included in the April Rollup. It isnโt included in the April Security Only patch.
I installed KB4056897 (2018-01 security-only update). IMPORTANT: If you have an AMD processor, DO NOT reboot immediately once the installation finishes: install KB4073578 first, then Reboot. I donโt have an AMD processor, so I just kept goingโฆ
Next I installed KB4074587 (2018-02 security-only update), KB4088878 (2018-03 security-only update), KB4093108 (2018-04 security-only update) and KB 4092946 (2018-04 IE-11 cumulative update). Reboot.
Since the April Security Only patch contains fixes for the problems in previous patches, I didnโt want to re-boot after each of the previous monthsโ patches, and possibly trigger losing my connectivity, or a BSOD stop errorโฆ and I avoided having to apply the individual fixes for those problemsโฆ and all is looking good.
Thank you, Speccy, who reported testing here: #184664. It gave me courage to go ahead and try to get updatedโฆ
Issues I looked at:
Since I wasnโt relying on Windows Update to provide the updates, I didnโt worry about the Quality/Compat registry key. It is there, and I know my antivirus is compatible, and Microsoft is lifting the requirement with the April updates.
Only the most recent IE 11 update is required, because it is cumulative. That means I didnโt have to mess with KB 4088835 (IE 11 fix for MS Outlook Web App), or KB 4096040 (Replaces KB 4089187, fixed IE 11 doesnโt start), because those fixes are included in Aprilโs update.
Total Meltdown was included in the January, February, and March Monthly Rollups, and Security Only updates (oh, Microsoft!). KB 4100480 the Total Meltdown fix has been superseded by KB 4093108. That means Aprilโs Security only patch included the fix.
KB 4099467 fixes Stop error 0xAB when you log off a Windows 7 SP1 or Windows Server 2008 R2 SP1 session. The bug was introduced by KB 4088878. The fix was included in KB4093108, so KB 4099467 doesnโt have to be installed independently any more.
Those were all the issues that I had in my notes… after reading through pages and pages of posts, and Microsoft support pages, the summaries of them don’t match my confusion and frustration at sorting through them. I’m posting this, so if I got something wrong (its happened a number of times before), somebody with more technical know-how can correct me. I want an updated, working laptop!
Thank you, PKCano, Abbodi, and MrBrian, and all the others willing to test and report and clarify what was going on.
Nowโฆ finallyโฆ I am feeling better about updating…

Non-techy Win 10 Pro and Linux Mint experimenter