Failed Install - 2018-03 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4088776)

Have you tried installing it manually?
Go to the link provided and enter the KB number and download and install.

But before you install do the following.

go to search and type command prompt and right click it and select run as administrator

Type the following one after the other hitting enter

taskkill /f /fi "SERVICES eq wuauserv" (you might need to run this command more than once)
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
rmdir C:\Windows\SoftwareDistribution\DataStore
rmdir C:\Windows\SoftwareDistribution\Download

Reboot

Then try installing manually from here https://www.catalog.update.microsoft.com/home.aspx

Hello,
I am Sumit, an Independent advisor and a Microsoft MVP here to help.
Regarding your issue, I would first suggest is to
Try resetting Windows updates using an automatic script. See:
http://www.yourwindowsguide.com/2015/12/windows...
Make sure you run the script as an administrator.
Please let us know if you need any assistance.

here is the fix and for all windows screw updates

Step by step instructions to get the issue fixed.
 
a) Press Windows key + X and select Command Prompt (Admin).
   
b) On the open Command Prompt window copy and paste the commands (all at once)
 
net stop wuauserv

net stop cryptSvc
 
net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

 

So far so good.  The problem seems to have been solved for me.

I did run the instructions below from pauldev1 - Cheers

a) Press Windows key + X and select Command Prompt (Admin).
   
b) On the open Command Prompt window copy and paste the commands (all at once)
 
net stop wuauserv

net stop cryptSvc
 
net stop bits

net stop msiserver

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

ren C:\Windows\System32\catroot2 catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

 

and then downloaded the update manually following these instructions

https://www.windowscentral.com/how-download-and-install-windows-10-cumulative-updates-manually

Then running the install which went without a hitch

I then did a "Check for Updates" and again the system said I had this cumulative update to install.  I let the automatic update run and this time there was no problem.

Hope that helps

I've tried everything in this forum and I still can't install the new update. Don't know what else to do

Okay...ran the script as an admin. It cleared out update history. Update still wouldn't install. Manually downloaded update. It still wouldn't install. And to be clear, it's not just that Windows *thinks* it isn't installed; winver confirms that I'm still on .64 . Honestly, WTH?

Dell XPS 13-9350

Oh that one's easy!

I would switch to Linux it's free! And it works

     OK, I have read with interest all of the comments so far regarding this issue and I certainly sympathize with all of the frustrated people posting on this forum.  I feel your pain as I too am having a similar issue.  In my case, in the Windows Update section of the settings menu, it keeps saying that there are 3 updates (#4088776, KB8058043 plus an Adobe update of some sort) which need to finish installing by re-starting the computer.   This "warning" does not go away and there is always a red X in the Windows icon (indicating that something is wrong) down in the system tray.  I have been trying to get this issue resolved thru Microsoft support since mid-March with no solution in sight!  And, don't even get me started about how much time I have wasted waiting on hold to speak to a tech.  That's a whole other issue in and of itself!  About a week ago, a level 2 tech installed the latest version of Win 10 with all current updates, but this didn't solve the problem.  And this morning, a level 2 tech told me he needed to do what he called "a clean install" of Win 10, and in doing so would wipe out all of my files and programs on my PC.  WTF?!  He told me to get 2 thumb drives, one for transferring all of my files and the other for downloading the ISO file.  My question is...is this really necessary?  It seems that every tech I talk to gives me a different story.  One of them even told me that Microsoft was aware of this issue(which is pissing off who knows how many users!) and would eventually come up with a fix in a later update.  I would gladly wait if this option were true?  Anyone?

Well... i had performed a reinstall of Win 10 myself in order to get version 1709 (Fall Creators Update) to install.  Had to do that since it was failing too.

Once that was installed tried the 2018-03 Cumulative Update which tried to install 14 times unsucessfully.  Since it had a Dell warranty i chatted in with them during the course of the 14 attempts and it took six times to finally get someone from tier ii to get it working.  Once it did install, and it showed it installed correctly. Then on the next reboot it again said it wasn’t installed. Ugh!!!  Luckly after a couple more attempts the 2018-03 patch installed. 

But wait there’s more.  It’s almost time for Microsofts ‘Spring Creators’ update.  Which i am sure will be filled with the same fun surprises.

The best part is if you don’t install the 2018-03 update you won’t get security patches.  And as we all know, you’ll want that because you can’t make truely secure code.  

Derek:  This past week, a level 2 Tech told me that the only way to eliminate the update issue was to do a "clean install" in which he would have to wipe clean my hard drive of all programs and files and then re-install Win 10.  Also, I asked him if Microsoft was going to repair and eliminate this issue with an update and he told me "yes."  So, I opted to wait and see if this happens.  It would be total HELL for me to load all my programs and files onto a thumb drive!  Comments?