Sims 4 is already running error

@queenliaaaaaaa  What settings did you change in OneDrive?  What is the full file path to your Documents directory?  To find out, search for "command" in Windows, open Command Prompt, and enter this:

reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v "Personal"

Please list the file path it spits out.  You can write [username] instead of your actual username, if you want, but leave the rest intact, and let me know if the username you see is NOT the one tied to your current Windows account.

Please also let me know what antivirus you use.

@puzzlezaddict HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
Personal REG_SZ C:\Users\username\Documents
i deleted one drive
windows security and free version of mcafee

@puzzlezaddict and it is the username for my windows account

@queenliaaaaaaa  Please disable McAfee, at leat temporarily, and try again to play.  As long as you don't open anything other than Sims 4, your computer should be safe.

If that doesn't help, please try playing in a new admin Windows account.  Make it a local account, as in, don't sign into Microsoft, and don't sync with any other services you normally use.  You'll be able to launch Sims 4 without reinstalling it, but your saves and other content won't be available.  That's fine; this is just a test, and if it works, that just means the cause of this error is something specific to your main account, so we know where to look next.