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Dear Winslet Y.W. Liu 劉玉雯,
In scenarios where cumulative updates for Windows Server 2019 continue to fail, especially on newly created virtual machines, we recommend verifying that the VM has sufficient disk space, correct system time, and all required servicing stack updates installed. Please also ensure that the Windows Update service is running under the correct account and that Group Policy or local security settings are not blocking update installation.
If the issue persists after DISM and SFC repairs, I suggest manually downloading and installing the latest cumulative update and servicing stack update directly from the Microsoft Update Catalog. This often resolves cases where automatic update mechanisms encounter repeated failures.
I appreciate your efforts in troubleshooting and hope these steps help stabilize the update process. If this guidance resolves your issue, kindly click “Accept the Answer” so that others with similar problems can benefit from the solution.
Thank you so muchh!!
Best regards,
QQ.