Sims 1 legacy crash

sphoeva​  Please provide a dxdiag.  Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop.  From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.

You should be able to remove compatibility mode by right-clicking the executable or its desktop shortcut, whichever you used originally and selecting Properties > Compatibility.

Realised I had to go through further administration paths to edit compatibility. Tried to adjust it to vista and xp, still no luck

Not sure its relevance but I have now uninstalled Norton Security from my PC 

sphoeva​  Again, you don't need to use ANY compatibility mode with Sims 1.  The game should run in Windows 11 without help.  And using a compatibility mode complicates troubleshooting.  So please remove the setting.

Please open this location:

C:\Users\your username\Saved Games\Electronic Arts

and remove or rename the Sims 25 folder.  Then try again to play.

If that doesn't help, look for new errors in the Reliability Monitor.  Click Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day.  Today is on the right.

Look for an error that happened at exactly the time of your most recent attempt to play.  If you find one, double-click it to see more details, then copy that info and paste it into a reply here.  If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.