I customise the Quick Access Toolbar in my Outlook 2016 Desktop Client to include the Advanced Find Command.~
I then extend the functionality by adding the Query Builder in the Registry.
This has been working for years.
Today I logged in and discovered that the Advanced Find command had gone from the Quick Access Toolbar;
and the command was no longer listed in the All Commands section of the customisation dialogs.
Can anyone help me restore this important functionality, please?