Steam client not starting minimized at system startup, and no option is available.

[mr.roboto1]

The newest Steam client (1687386907) does not have a "Rum minimized at startup" in the settings menu. Instead it starts full screen when I start Windows 10.

Where did this setting go?

[Norwegian Blue]

I'd like to know too. It seems they just want to show more ads.

[Happy]

You can make Steam start up minimized like before with a command in registry editor.

First make sure you have auto start enabled.
Open regedit and go to
Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run

Find the entry called Steam, right click and edit it.
At the end of the line add:

-minimized makes it start minimized. No clutter on your screen on start up.
-vgui sets it to use the old UI from before the update.

So the full value data line in my case says:
"C:\Program Files (x86)\Steam\steam.exe" -silent -vgui -minimized

... and don't change your steam settings afterward as it resets the change xD

[mr.roboto1]

Good thing I have experience using regedit. Made the additions easily, though I won't be restarting until tomorrow morning.

Let you know in the morning.