I have part of the answer. If I have a folder / document and it is showing in file explorer I can do the following: Open the event and select Attach from the menu. In my case the option shows http:// and it needs to be replaced with file:/// . Right click on the folder / document and, in Windows 11, select Copy as path . Past the results after file:/// and remove the quotation marks. My questions are: Why is the only option Webpage? Why are not both the http:// and file:/// available? If the file option was available can that option also remove the quotation marks?