KB5004298 and KB5004285, we only need to install one of them, install Monthly Rollup KB5004298 is enough. Before install KB5004298, make sure your server 2012r2 installed the latest SSU KB5001403.
Let’s reset windows update components.
Right click on the start button and select Powershell (admin) or Command Prompt (admin)
Write the next hit enter after each line.
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
After completed, restart computer and manually install standalone package KB5004298 from https://www.catalog.update.microsoft.com/Search.aspx?q=KB5004298
And manually install KB5004231 from https://www.catalog.update.microsoft.com/Search.aspx?q=KB5004231
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