Re: HELP, Can't upload my sims to sims 3 exchange!

@mycailin  Can you upload a sim with no custom content attached?  It would be a useful test to see whether the issue is your cc or something else.

If that doesn't make a difference, try clearing the cache for Internet Explorer.  Even if you never use it, the launcher does for some purposes.  I don't actually know whether it affects uploads, but given the other issues a stale IE cache can cause, it's worth trying.  Be sure to uncheck the box to preserve data for favorite sites.

https://kb.wisc.edu/page.php?id=15141

If that doesn't help either, please move your entire Sims 3 folder out of Documents\Electronic Arts and onto your desktop.  Open the launcher to create a new folder, move one file from Exports in the old folder to Exports in the new folder, and see whether it uploads.

By the way, you can back up your sims, or anything else you want to keep (saves, saved builds, anything in your Sims 3 user data folder) on an external hard drive.  The files are easily transferred between internal and external drives, and external storage is relatively cheap these days.  You could also use cloud storage: many services (Google Drive, Dropbox, etc.) offer a certain amount of storage for free.