Re: Download fails after finalizing - The Sims 4
@sarahkate513 This is how to clear Origin's cache, in case you want to check your work:
https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/
Restart your computer after you've done it. If the download still fails, clear Origin's cache and restart your computer again, and then try repairing the game instead: right-click on the Sims 4 icon in your Origin library and select Repair.
If this doesn't help either, try setting an exception for Origin.exe in your antivirus/firewall. You might need to set one for TS4_x64.exe too, although that wouldn't seem necessary just for the update process.