Hello,
my system is an updated Fedora 25.
A previously working windows share mounted via cifs is not working now (I have not the details of it but I know only that it is a DFS share, managed by a cluster of two windows 2012 R2 servers)
After some attempts, I have verified that the critical point seems to be the "uid=1000" option that I previously used to map permission of files and to be able to change them.

entry in fstab working
\\my.windows.domain\home\path1\path2\path3 /myshare              cifs    noauto,_netdev,credentials=/etc/smbcred_myshare  0 0

entry in fstab not working (verified the same from command line, doubling the slashes in this case)
\\my.windows.domain\home\path1\path2\path3 /myshare              cifs    noauto,_netdev,forceuid,uid=1000,credentials=/etc/smbcred_myshare  0 0

NOTE: I tried both with and without the forceuid option when using the uid= one but no go in both.

Of course my linux username is not the same as the username used in credential file.
If I mount without uid I get all files owned by root and not able to modify anything in Linux.
Any hint on what to try?

Thanks in advance,
Gianluca