Microsoft has released the optional KB5007253 Preview cumulative update for Windows 10 2004, Windows 10 20H2, Windows 10 21H1, and Windows 10 21H2 that claims to fix the 0x000006e4, 0x0000007c, or 0x00000709 network printing errors. […]

from https://www.bleepingcomputer.com/news/microsoft/windows-10-kb5007253-update-released-with-network-printing-fixes/