I use GPOs with admx files in several places for years now. As I was searching for a solution for latest Windows 20H2 PCs I also thought that maybe the admx templates on the DCs don't match/work. In general: how do these files work? Are they copied and/or read by the clients/PCs? Or only used at GPO-creation/edit time, by the servers running the Group Policy Management Console? The structure of the general store in $SYSVOL also makes me wonder. I don't find any real howto: one set of files per Windows version, or always write over the last set of files -> feels scary. Is there a good explanation somewhere? thanks, Stefan ps: I already solved my initial problem, btw