Permission denied after Mount Share Folder

Good day

I am having problems when mounting a windows shared folder in Ubuntu. I will tell you the steps I take to mount the folder

I create a folder in ubuntu, with Code:sudo mkdir /mnt/folderwith that folder I can create files or see the properties of the folder

later I add the following line to the fstab as an example:

Code://192.168.x.x/folder /mnt/folder cifs uid=xxx,gid=xxx,credentials=/root/credential 0 0later I mount the shared folder

Code:sudo mount /mnt/folderThe folder is mounted correctly but it does not allow me to create files or do anything, it sends the message Permission denied

You could tell me what I'm doing wrong, thanks, the shared folder in windows is configured correctly

Note: The folder in windows is shared with write permissions

Thanks and regards.