A Zoom Rooms PC can keep displaying a calendar and still be outside support.
That is the uncomfortable part of Zoom’s Windows 10 Retail/GAC notice. Zoom says the last supported Rooms version on Windows 10 Retail/GAC is expected in September 2026, and after that release the app will no longer receive updates on Windows 10 Retail. Microsoft already ended Windows 10 support on 2025-10-14, so the room endpoint now sits between two lifecycle clocks.
The operational mistake is to treat that as a future patching problem. It is really a replacement and control problem. Once a room PC falls behind the supported path, you lose the easy assumption that a signed-in endpoint is a manageable endpoint. You are left with a device that may still function, but no longer fits the vendor support model you rely on when something breaks at 8:55 before a board meeting.
The useful decision rule is simple: if the room hardware cannot move with the platform, start the retirement plan when the platform still has time left, not when support has already expired.
That means checking three things together: the Windows edition, the Zoom Rooms version runway, and the replacement path for the hardware. If any one of those is vague, the room is not “stable”; it is accumulating support debt.
For collaboration environments, this is less about OS preference than about keeping the room inside a supportable operating envelope. The room can look fine and still be one update away from becoming an exception case.