Hiiiii
I'm also have same problem but I got so many solution on it
1 . By restaring the services such as -workstation,server,network connection,net logon etc
2 . The very good solution is that ":IF U HAVE ANTIVIRUS PROGRAM INSTALL THEN SIMPLY DESABLE IT AND THEN TRY TO OPEN SHARE FOLDER THEN ENABLE ANTIVIRUS PROGRAM":...
Maddy