Solution 1:

CIFS share will be mounted as root using your command, so normal user not able write anything there. You need to specify the user and group ID for whom you want to assign read/write permission. You can try with below command.

sudo mount -t cifs -o username=myuser,password=yourpassword,domain=mydomain,uid=yourUID,gid=yourGID,forceuid,forcegid //server/share /mount/path

Also you can use id command to get uid and gid automatically like below.

sudo mount -t cifs -o username=myuser,password=yourpassword,domain=mydomain,uid=$(id -u),gid=$(id -g),forceuid,forcegid //server/share /mount/path