I'd remove any mods you have, since unless they are CC they will completely break after this patch with the new python change/update to the Sims game.
Maybe even backup your save game and tray folder somewhere else and delete the my sims folder in the documents/electronic arts folder. Or reboot. Or do a repair files.
Regardless it sounds like you need to restart origin at the very least.
Mine was stuck in 100% for ages. I paused it then restarted origin then went back in and whilst still slow it did eventually complete. It’s quite a big patch x
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Maybe even backup your save game and tray folder somewhere else and delete the my sims folder in the documents/electronic arts folder. Or reboot. Or do a repair files.
Regardless it sounds like you need to restart origin at the very least.
Cancel the update. Remove your mods folder, if you haven't already. Delete the localthumbcachefile. Reboot your computer and try again.
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