Hello Andi19801. The switch does not interrupt the Internet per se. However, there is a variant that has a time-controlled effect on the Switch: In the administration console of the USG, you can activate a scheduled upgrade under services. I would take a look at the events and alerts. An interruption at the same time sounds more like the router used (forced interruption). This all depends on the setup. What is displayed in the Ubiquiti dashboard under devices for uptime (for the switch)?