When I accessing ‘CON’ document library, the browser has error like this :
Server Error in ‘/’ Application.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.
Requested URL: /AAAAA/CON/Forms/AllItems.aspx
==> Certain reserved word can’t be used for SharePoint site, list names.
Actually you can create the site and list but when you trying to access the site or list you will get 404 error message.
However if you try to create those folder name in your computer, you will get The specified device name is invalid error.