If they really are installed (check the update history): hide them. If the install failed and keeps failing: contact Microsoft (support for Windows Update issues is free).
I got the message
"18 important updates selected - 153.4 MB"
I installed the updates.
After a few minutes I got exactly the same message.
Again I installed the updates.
But : again exactly the same message.
Is this a "loop", what is happening ?.

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