Is your computer 1803 or 1809 at "START, Settings, System, About"? There's a specific "fix" depending which. But what TcatHF wrote on page 2 works for either one...
(1) Open File Explorer.
(2) Right-click inside the Address Bar, & select "Edit address".
(3) Type in "\ComputerName" of the computer to connect, & hit ENTER.
File Explorer will go to the Network folder with that computer as a sub-folder.
(4) Right-click the sub-folder in the left pane, & select "Pin to Quick access".