I cannot activate Notifications for the Weather application. In the Notifications Settings, the main switch to "Allow Notifications" is stuck in the Off position and cannot be moved to the On position.
In fact, after having the issue with the Weather application, I realized that the main switch is locked for all applications. I only tried for a dozen applications (from Apple and from other developers), and all main switches are locked. If they are in the On position, they cannot be moved back to the Off position. Still the same after a restart. I am not sure if it was not there before the latest macOS 26 update.
Anybody else has the same issue?