The installer files themselves are missing data.
Modern high-core processors can overheat during intense decompression, causing Windows to throttle performance and trigger the error. unarc.dll returned an error code 11 sims 4
Open your torrent client, right-click the Sims 4 download, and select Force Re-check . This will download only the missing/corrupted pieces. 5. System File Repair The installer files themselves are missing data