Hello Raymond, sorry about your problems. My name is Marco and I will do my best to help you.
1.Open the Run dialog box again with Windows Key + R, type: shell:startup
Press Enter.
This will open the Startup folder. If you find any shortcuts to Outlook here, delete them.
2.Navigate to Settings > Accounts > Sign-in options.
Turn off the 'Restart apps' setting. This prevents apps that were running at shutdown from reopening upon restarting your PC.
3.Check if there are any third-party utilities that sync Outlook data, as these might cause Outlook to launch at startup to access the data. If found, adjust their settings accordingly.
4.Press Windows Key + R, type msconfig, and press Enter.
Go to the 'Services' tab in the System Configuration Utility window.
Find any entries related to Microsoft Outlook, uncheck them, and then click 'Apply' and 'OK'.
- Open the Registry Editor by typing regedit in the Run dialog box.
- Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run and HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce.
-Look for any entries related to Outlook and delete them if present.
Be sure to make a backup of the registry before changing anything in it, just in case.
How to : https://support.microsoft.com/en-gb/topic/how-t...
By following these steps, you should be able to control whether Outlook automatically opens when you start your computer.