[SOLVED] Windows Server 2019 Essentials error "0x800f0831" when trying to install any role from Add Roles and Features

[Maxstar]

Follow these instructions to remove an update.

• Open the Start menu of Windows and type the command CMD
• When you see Command Prompt on the list, right-click on it and select Run as administrator.
• When command prompt opens, copy and paste the following command into it, then press enter.

wusa /uninstall /KB:4534273

• Let me know if it says it was successful or you get the message: The update KB4534273 is not installed on this computer.

 

[Salva84]

Hi, uninstalled successfully!

 

[Maxstar]

(...) I cannot apply Windows Update and when trying to install any role from Add Roles and Features.

Great, please try to install a role or feature first, this will trigger the same error as trying to upgrade.

Let me know the result when you try to install one of them, if it fails attach a new copy of the CBS logs.

 

[Salva84]

Great, please try to install a role or feature first, this will trigger the same error as trying to upgrade.

Let me know the result when you try to install one of them, if it fails attach a new copy of the CBS logs.

Hi, tested the installation of a new role and completed successfully.
Installed first update of WU and that too installed successfully.
The server is now restarting. Let's hope it's been resolved completely!
I'll update you as soon as the server comes back online!
Thank you!!

 

[Maxstar]

This looks promising, so let me know the result...

 

[Salva84]

Hi, I confirm problem solved! I searched for updates and this is the result

Out of personal curiosity, were the problems failed updates? What can I do to prevent this from happening again?
Thank you!

 

[Maxstar]

Hi,

You're welcome. Glad to see this server is up-to-date now.

Out of personal curiosity, were the problems failed updates?

In short, remnants of a certain update caused this problem, and some other files were also missing.

I will mark this thread as solved...