Just as the name implies, the Windows 10 October 15 update was published on October 15, 2019.
To protect your system & disk data, you gotta get help fromMiniTool Solution.
In theory, users could choose to drop in the critical update.

Should I Upgrade To Windows 10 How To Decide?
It is not as important as some of the previous updates in terms of the security.
just read them in advance before you decide to upgrade your system.

You might also receive a 0xc0000409 error in Event Viewer in MsSense.exe.
Microsoft suggested that the devices in an affected environment do not drop in the Windows 10 October 15 update.
Windows Defender ATP Supports USB & Removable Devices.