Error-code-135dec40-3fbbecd0-00000064-0

@rallu07  Given how stubborn this issue is being, I think it's time to do a clean uninstall and reinstall of both Origin and Sims 4.  Start by uninstalling Sims 4:

• Wherever your original Sims 4 user folder is, as in, the one that contains your saves, rename it to something that doesn't include the words "Sims 4."
• Download Revo Uninstaller (the free version is fine) from here.
• Launch Revo, select Sims 4 from the list, and click Uninstall.
• Once the game is uninstalled, select "Moderate" under "scanning modes," and click Scan.
• Review the list, in case there's something you want to save; otherwise, click Select All, and then Delete.
• Close Revo, and restart your computer.

Next, uninstall Origin:

• First, clear Origin's cache.
• Quit Origin, then right-click on the Task Bar and open the Task Manager.  Scroll through looking for Origin entries.  If you find any, click on them and End Task.
• Launch Revo again and uninstall Origin, and when it's uninstalled, select "Moderate" again and Scan.
• If Revo finds any remaining registry entries, select all, delete, and click Next.
• Revo will display "Remaining Data and Folders.  Select all of them except for the "Origin Games" folder, if it appears.  (This is where other Origin games are installed by default.)  Delete the rest.
• Close Revo, and restart your computer.

Just to be extra thorough, please create a(nother) new admin user account on your PC.  Login to that account, download the full Origin installer, and run it.  Here's the direct download link:

http://download.dm.origin.com/origin/live/OriginSetup.exe

Be sure to run both the installer and Origin itself as an admin: right-click on each and select "Run as Administrator."  When it's reinstalled, create a new folder within Program Files (x86) where you'll install Sims 4, as in, not the Origin Games folder Origin wants to use by default.  You can name this folder whatever you want.

Open Origin, hover over your username, select Application Settings, then the Installs & Saves header, and choose the new folder you created as the install location.  Now download Sims 4; you can download only the base game, to save time, if you want.

Restart after installing and before trying to play.