Windows 10: Multiple "installing" sequences for Win10 Cumulative Updates since Version 1803

Whenever I'm installing a Cumulative Update (Ver. 1803 and 1903), the same post-download sequence happens: I get an "Installing" message that progresses to 100% at a prompt (but not rapid) pace - then sits at 100% for 10-15 minutes - then goes into another "Installing" sequence that takes very much longer than the first one. It's always a 2-stage install - never less/more.


I'm curious if this is a normal occurrence - or if it could be indicative of an issue with a software conflict or such that could be compromising the install in some way.


Background: this is happening on 2 laptops - an HP with an SSD, and a Dell with a standard drive. Both are originally Win7 builds - with the HP being manu. supported for Win10 migration, while the Dell isn't (but doesn't seem to have issues utilizing it - beyond having lost the ability to charge the battery, which is a big pain).


Note: I apologize if this has been answered before - I couldn't find a updating-issues thread that addressed this specific one on here (or with a web search).


Thanks in advance for any help!

:)

 

Latest win10 Update 1803 cant install?

I am having a issue with this update,. I fallow the steps via windows update, DL the update, shows install. ask me to reboot pc. after reboot its start the update install pc reboot several times. On the last time, I get a message saying" Restoring windows to previous version". Then it takes me back to windows, and i get a message update could not be installed.
In windows update-control panel it shows update waiting for reboot. i click on it and does same thing. after install it restore to previous version. what is going on?
I have disable windows firewall for time being.
specs
Z97 Pro gamer MB 4790k @4.7 DDR3 2400 RAM Win10 x64 M.2 and SSD.

 

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Planning to download the latest Win10.ISO (vers.1803) and manually update:
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Latest win10 Update 1803 cant install?

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