Disable "Welcome back" message

[harry]

I recently bought a new laptop with Windows 10 and Office 2019, and I want to disable the "Welcome back" message that pops up when I open a previously edited document in Word 2019.

I found several online articles about this; for example, these:
How To Disable Pick Up Where You Left Off In MS Word
How to Disable ‘Pick Up Where You Left Off’ in Microsoft Office



They advise to open the "HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\ Word\Reading Locations" key, right-click on "Permissions", click on "Advanced", tick the "Replace all child object permission entries with inheritable permission entries from this object" option, click on "Apply" (security message appears: click on "Yes"), and click on "OK".

However, when I click on "Yes" at the security message, the option immediately unticks itself (even when I run the registry editor as an administrator).

Am I doing something wrong, or is there another way to disable this unwanted pop-up?