check what you have
file /mnt/Folder
Is it yours or copied from a random guide?
This
//xxx.xxx.xxx.xxx/Folder /mnt/Folder cifs vers=1.0,credentials=/home/myname/.smbcredentials,uid=xxxx,gid=xxx,iocharset=utf8 0 0
Do you actually own this - then everything is wrong - it actually lloks like a copy paste from a random guide on the interweb
Mount manually using mount command if you are unsure of the options needed
mkdir ~/temp
sudo mount -t cifs //ip.x.y.z/share temp
A very thorough troubleshooting guide
A from scratch