How to make Userform Listbox Header Non-selectable

I assume you are using AddItem in your code to build your listbox. How are you placing the header? Are you explicitly adding it in your code as the first row of data? If so there are two alternatives:

1. Instead of using AddItem to build your listbox, use a range in a worksheet and assign it to attribute RowSource, and put the headers in the row just above that range, and then turn attribute ColumnHeads=True. Unselectable column headers will be shown.

2. Instead of putting the headers in the listbox, use Labels just above the listbox.

If this is not helpful then remove all your data then attach a copy of your file. An image attachment has limited value. The paper clip icon does not work for attachments. To attach a file, under the text box where you type your reply click the Go Advanced button. On the next screen scroll down and click on Manage Attachments, which will show a pop-up window to Select and Upload a file. Then close the window.