Re: game already running

@veronikapoin  The new user means a new Documents folder, with default permissions and nothing else broken about the folder or its contents, at least at first.  If you want to use the new account, you can just move everything over to the corresponding subfolders, using exactly the same file path as your current user has, except in the new account.  For example, this:

C:\Users\original username\Documents\Electronic Arts\The Sims 4

becomes this:

C:\Users\new username\Documents\Electronic Arts\The Sims 4

To move the files between accounts, you can drop them into C:\Users\Public, which is accessible from both.

If you'd like to try to fix your main account, try running the Takeown command.  First, run a Windows search for "Command Prompt," open it, and enter this command:

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

The location you see is what you'll use for the command.  The command itself is this:

takeown /F "[file path to Documents folder]"

So it will probably be one of these, but double-check anyway:

takeown /F "C:\Users\username\Documents"

or

takeown /F "C:\Users\username\OneDrive\Documents"

Write your actual username for this Windows account (your main one) instead of username.  Since the syntax needs to be exactly right, please copy this command to a Notepad file, substitute in your username, and then copy that string when you're ready to use it.  Hit Windows key-X and choose either "PowerShell (Administrator)" or "Windows Terminal (Administrator)," whichever option is offered, paste the command into the window, and enter.

Then restart your computer and try again to play.

If that doesn't help, please see this post for further troubleshooting:

https://answers.ea.com/t5/Mass-Effect-Legendary-Edition/quot-A-problem-occured-while-saving-the-game-No-game-session/m-p/12689808#M17087

You'll of course apply these steps to the Documents folder your account is using, wherever Command Prompt told you that was.