Cumulative update December 2020 - KB4592438 Failed to install

Nope. It is a Win 10 installed laptop as factory default. It also happens with Surface Pro 7, which comes with Win 10 installed, and it is a Microsoft product :D.

I understand, I didn't want to do the re-install either as it is almost 1 week that I'm working onback ups and reinstallating stuffs and I'm not done with it yet. :-(

Just a question though, were you working on an upgraded Win10 from a previous version (like Win7, win8, etc) ?

I'm asking because it was my case and while looking at other forums, it was also the case for a lot of peeps that are experiencing the same issue. I wonder if this upgrade might be incompatible with such legacy installation? ¯\_(ツ)_/¯

Glad to hear that it worked for you. Nothing has changed for me, sadly. Still getting stuck at 7% and cancelling the installation. I will wait for the new update to roll out. I cannot do the re-install Windows overkill as I have so many things to do and cannot spare a day for that.

I can understand most of the errors on my other laptops, but I cannot understand why it cannot update a Microsoft Surface with anything except MS Office, Figma, and Cisco Web Server on it.

I have seriously started checking Apple prices. I will switch my workstation to Apple and keep a separate gaming rig for my Steam stuff.

Hi All,

same problem with KB4592438 but with Error 0x80070002 ,   coming from  version 19042.630 ,  several attempts with DISM and SFC  but no success, nor offline KB4592438 installation. WU stopped working

After reading a lot on the web I tried this metod here found on this link

Error 0x80070002 - Windows Update - Microsoft Community:

Open administrative Command Prompt and type following commands one-by-one followed by Enter key.

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

Close Command Prompt and see if Windows Updates works then

The two ren commands did not work for me since the paths were not found on my machine so I skipped them

After closing the command prompt I relaunched the Windows Updates procedure, KB4592438 was downloaded. Did a restart and at the end the update was successfully installed, now I am with 19042.685.

Hope it can help

M.

OMG This magically worked!!!

I have been on "update failed -> system repair -> uninstall update" loop since the 2020-12 cumulative update and gave up after trying all the mentioned scannow, offline download etc etc, and decided to just wait for the next update BUT i saw this and tried and it worked!!

I Typed all the commands by copying and pasting on admin CMD, though take note, 

net stop wuauserv (it did stop this service)

net stop cryptSvc(it did stop this service)

net stop bits  (this was not stopped cuz somehow its not running to begin with)

net stop msiserver(this was not stopped cuz somehow its not running to begin with)

Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old(it looks like it did nothing cuz no message after typing this)

Ren C:\Windows\System32\catroot2 Catroot2.old(it looks like it did nothing cuz no message after typing this)

net start wuauserv (it enabled this service)

net start cryptSvc(it enabled this service)

net start bits(it enabled this service)

net start msiserver(it enabled this service)

after im done typing ALL of the commands,  I then opened the "Check for Update" on pc again and it downloaded and installed the update then restart, but this time it proceeded and finished the update !!!!

The issue was fixed for me after reinstalling Windows... :(

However, I found this after the fix. It looks like something that worth the shot.

https://howtofixwindows.com/windows-10-update-install-error/#:~:text=If%20Windows%2010%20update%20KB4592438,Update%20to%20download%20fresh%20files.

Good luck with that!