Linux – Can’t Mount Multiple Shares from Windows 10

I have a machine (winten) running Windows 10 Pro that exports two shares (X and Y). I can mount either of those shares on my Arch Linux machine, but not both at the same time. The configuration in /etc/fstab is exactly the same for both shares except for the name of the share:

//winten/x /mnt/winten/x cifs nofail,noserverino,vers=3.11,credentials=/etc/samba/private/winten-Net,uid=65534,gid=65534,file_mode=0444,iocharset=utf8,ro 0 0
//winten/y /mnt/winten/y cifs nofail,noserverino,vers=3.11,credentials=/etc/samba/private/winten-Net,uid=65534,gid=65534,file_mode=0444,iocharset=utf8,ro 0 0

The credentials file contains the name and password of a local user on the Windows machine.

Here's an example of trying to mount the shares:

# mount /mnt/winten/x
# mount /mnt/winten/y
mount error(22): Invalid argument
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)
# umount /mnt/winten/x
# mount /mnt/winten/y
# mount /mnt/winten/x
mount error(22): Invalid argument
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)

As you can see, whichever one I mount first works, and the second fails.

Here's the related output from dmesg:

[597888.074965] CIFS: Attempting to mount //winten/x
[597890.126132] CIFS: Attempting to mount //winten/y
[597890.129018] CIFS VFS: cifs_read_super: get root inode failed
[597899.512091] CIFS: Attempting to mount //winten/y
[597902.941119] CIFS: Attempting to mount //winten/x
[597902.942777] CIFS VFS: cifs_read_super: get root inode failed

What do I need to do to get both shares mounted simultaneously?

I found this question, but it's going the other direction (mounting Samba shares on a Windows machine), and the problem turned out to be using different credentials for each share (but I'm using the same credentials).