Windows 10 keeps installing the same update over and over

First distinguish a repeated download from an installation that actually completes. Record the exact KB number, open Update history, and compare its latest status with the operating-system build shown by winver after restarting. Microsoft documents that repeated offers can occur when installation did not complete correctly or the update was not detected as installed. Because you already cleared SoftwareDistribution and tried hiding the update, repeating those steps would not explain which condition applies. Run the Windows Update troubleshooter, then retain the installation error and the relevant CBS log entries from Windows, Logs, CBS. Get-WindowsUpdateLog can also produce a readable Windows Update log for investigation. Share the KB, edition, build, and error code, with personal information removed from excerpts. Do not permanently suppress the cumulative update as a fix: the servicing failure needs identifying before deciding whether repair or a targeted installation is appropriate.