Cumulative update December 2020 - KB4592438 Failed to install

Having same issue. Numerous attempts to install KB4592438 - all resulting in Undoing Changes and return to original.

I have connected to four different support people... three trying everything to check Win 10 and my computer, including DISM, scannow, troubleshoot, RegWUEng, etc.  Nothing is finding any issues.

The last support did separate this update from another. We got the other update to install and restart. But when we attempted install the above update, it failed again. I do note that it is a very large and lengthy install.... and quite a long undo session.

With others reporting the same issue, I think its time for MS to revisit this noted KB update and see if there is a real issue.

Package KB4592438 failed to be changed to the Installed state. Status: 0x800f0922.

CPU: AMD Ryzen 5 5600X

MB: ASUS TUF GAMING B550-PLUS (WI-FI)

Update breake down.

I have no time to googel for hours to solve such problems.

I am not the problem.

The windows programmers are the problem. They earn much money, so they can fix there bad programming.

I am a Programmer too.

I studied computer science, but that was the biggest mistake.

My nerves are totally ruined

Waiting for any updates for hours.

What worked yesterday no longer works today.

Did I study to fix every time such errors?

Please Help

Tom / Germany

French user so sorry for my english spoken.

Same problem with my windows 20H2

MSI X470 R5 3600 Nvidia 1060 3Go

All drivers up to date (even bios)

Tried all methods given on the net, also tried the software Reset Windows Update Tolls which seems to be good to solve update problems.

Tried to uninstall severals programs (Vmware or Cyberghost) but still no way .

Failed again with the stand alone update : download 100% installing 100% and.... Fail!

All updates before (during 2 years ) were fines but this is the first one wihch is problematic.

Update micosoft antivirus today via Windows update was fine too.

I have the same issue. Followed all of the above steps - december SSU was already installed

C:\Windows\system32>sfc /scannow

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.

Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

C:\Windows\system32>dism /online /cleanup-image /restorehealth

Deployment Image Servicing and Management tool

Version: 10.0.19041.572

Image Version: 10.0.19042.630

[===========================84.9%=================         ]

[===========================86.1%=================         ]

[===========================87.3%==================        ]

[===========================88.7%===================       ]

[===========================89.9%====================      ]

[===========================91.1%====================      ]

[==========================100.0%==========================] The restore operation completed successfully.

The operation completed successfully.

Same result - the installation fails with error 0x80070003

Exactly the same for me.

Thanks, RAJU.MSC.MATHEMATICS for your response. But the servicing stack update KB4593175 is already installed. Installed the LCU a second time. but returned back withe the same error.