I had problems with the Optional Update KB5020030.
I noticed that there was an Optional Quality Update – Cumulative update preview for Win 10 22H2 KB5020030 – when I recently checked All Settings / Update and Security / Windows Updates.
I clicked on Download and Install but, afterwards, the computer would not re-boot. It tried to fix the error automatically but, after a number of failed attempts, I had to do a Reset PC.
Bleeping Computer has details on the update here https://www.bleepingcomputer.com/news/microsoft/windows-10-kb5020030-preview-update-released-with-ten-improvements/
I will not try again until it becomes NON Optional.
A Reset PC is now easy BUT I could not re-download SyncToy from Microsoft. See previous posts about this topic https://whysun.com/computers-and-the-internet/windows-11-update-9-synctoy-alternative-syncfolder/ AND https://whysun.com/computers-and-the-internet/windows-11-update-8-synctoy-backup/
I could have used SyncFolder, BUT I found a copy of the SyncToy 2.1 installer on Major Geeks .com https://www.majorgeeks.com/files/details/microsoft_synctoy_for_windows_xp.html
Major Geeks is a well known and reputable site and the program installed without any issues. Even UAC said it was from Microsoft.
I have been caught before with optional Driver updates – BUT now I will never install any optional updates.