With the cumulative updates of Windows 10 for March 2021, Microsoft seems to have caused utter chaos as many users have run into serious problems.
In the meantime, It seems that the second update of Windows 10 who came to fix the first has ceased to be available from the company.

Have the updates been withdrawn?
Στη σελίδα κατάστασης των Windows 10 δεν μπορούσα να βρω τίποτα για τις ενημερώσεις της versionς 20H2 που αποσύρονται.
Also, the english information page των Windows 10 δεν περιέχει πληροφορίες για την ενημέρωση KB5001649 και ότι έχει αποσυρθεί. Ένας έλεγχος στο Microsoft Update Catalog έδειξε ότι η ενημέρωση KB5001649 εξακολουθεί να εfiberι εκεί διαθέσιμη για λήψη.
However KB5001649 no longer appears via the Windows Update GUI on any of the computers I have in version 20H2. If you are interested in it you will find it only through the Microsoft Update Catalog.
At the moment it seems that the cumulative security updates for March 2021 and for the Surface Laptop 2 have been withdrawn.

I have the 20H2 Pro and it shows me KB5001649 (25.3.2021) available for optional installation. Will they withdraw it?
does it have a date today? it would be good to wait a while