After doing an in place upgrade to 4.2, I tried to delete the qube labeled obsolete, only to get the message:
VM fedora-38 cannot be removed. It is in use as:
-template for default-mgmt-dvm
qvm-template: error: Domain is in use: ‘fedora-38”,see ‘journal to -u qubesd -e’ in dom0 for details
I looked for the “Qubes Template Manager” tool, but it just sent me back to the same place I was already at. (The title of the box it opened was “Qubes Template Manager.”)
Then I decided to try the “Qubes template switcher,” which is the tool option directly underneath the “Qubes template manager” in the drop-down menu.
That opened a box called “Template Manager,” which is where you were trying to direct me. It feels less unintuitive now that I’ve found it. The documentation is oudated.