Invalid license message upon launch?

@Simologist  Try repairing first, and if that doesn't help, uninstall and reinstall.  There's no harm in trying a few different approaches; just be sure to use the installers from the Origin folder.

Apologies for the very late response, however this method did not resolve my issue either ☹️ I tried repairing and uninstalling/reinstalling as administrator but still no luck

@Simologist  Don't worry about the late response.  Do you have a third-party antivirus installed?  If so, please disable it, then uninstall and reinstall the runtimes (from the Origin folder) again.

If that doesn't help, or you don't have an outside antivirus, please create a new admin user account on your computer and try uninstalling and reinstalling the runtimes from that account.  You shouldn't need to reinstall Origin or Sims 4 in order to launch the game from the new account, although your existing content won't be usable.  You can fix that later; for now, the question is whether the game will launch at all.

I've tried both methods, still no luck. I'm able to load Origin but whenever I try launching The Sims 4 from my library that message appears.

@Simologist 

Thanks for tagging @puzzlezaddict 

Lets try the update for VC++ 2013.

https://support.microsoft.com/en-us/help/4032938/update-for-visual-c-2013-redistributable-package 

• Download the package for your region (Or regional settings), both the "vcredist_x64.exe" and the "vcredist_x86.exe"
• Run the "vcredist_x64.exe" as Administrator. (Right click the vcredist_x64.exe > Run as Administrator.)
• Run the "vcredist_x86.exe" as Administrator. (Right click the vcredist_x86.exe > Run as Administrator.)
• Restart your computer. (A real "Restart", not just shut down and start again.)
• Test.

Still doesn't work, I've done it step by step; even repairing the game after my laptop finished booting up

@Simologist 

• Press the Windows key and "R" simultaneously..
• Type or copy and paste "appwiz.cpl" (without the quotation marks) into the new window > ENTER
• Click on "Enable or disable Windows features" (sidebar).
• Make sure that the entries marked in red are identical.

If not > activate > restart PC > Test.

If they are set this way > Disable ".NetFramwork 3.5" > OK > wait until the uninstall is finished > restart the Computer.

After the restart, enable ".NetFramwork 3.5" > wait until the installation is done > restart the Computer > Test.

@Simologist  I know this might sound stupid but when I had this error I download the VS C++2015 after I installed the 2013 package