buy the sims 3 expansion packs downloads

There is no possible way any of my could have been purchased illegitimately. The others were bought digitally off of origin. But if those followed by a reboot still do not work, then it's most likely an account issue of some kind that only EA Customer Support can assist with. If that doesn't help, yes uninstall and reinstall Origin (only, not your games) as said. If the packs are really missing on the Launcher side and not just in need of being checked off again at startup, try an Origin Repair Game on TS3. What is the source of the others that are not discs? Is this what you are experiencing or is it something else? You said that 'most of' your game and packs are discs, I assume that means sealed retail original purchase discs at the time. In those cases they do not need re-installation, but they will not show on the 1.69 version of the Launcher to be checked off on the Packs and Stuff chooser tab even though they are indeed installed. They cannot 'uninstall themselves.' Although Origin can lose track of what you do have installed and you can also be blocked without warning from the EA end from running what someone or something thinks are illegitimately obtained packs. I think they were trying to describe to us here in Tech here what Origin is (this wasn't really - EPs are program files. The OP did not say they bought anything by way of Steam.

They look like this: – The Sims 3 Into The Future

Each Expansion Pack for The Sims 3 has the same name.

If you want to uninstall the base game, delete The Sims 3 folder, too.

Right-click on the folders of the packs you want to uninstall and select Delete.

For 64-bit systems, expand Wow6432Node.

Buy the sims 3 expansion packs downloads