if it's still a pack issue, you'll get a critical error msg, if it's the same issue i'm having, it's a "Updater can't start. File host service unavailble" msg otherwise. If the latter pops up, try doing deleting the updater_remote.cache file that should be in the folder in the screenshot

"path" being the white box that (in the screenshot) says "C:/Games/The Sims 4" (it probably says something else for you). You can find this by clicking on your game shortcut and clicking "open file location"