Azure – CIFS VFS: \storageaccountname.file.core.windows.net Send error in SessSetup = -13, STATUS_LOGON_FAILURE

We have a storage account in azure in which we have a file share that we’re mounting on our Ubuntu machine on /path/to/mountdirectroy/
it was working fine until I checked today and found that it is no longer mounted

df -h shows

df: /path/to/mountdirectroy/: Host is down

checking the dmesg error (kernel error)

 CIFS VFS: \storageaccountname.file.core.windows.net Send error in SessSetup = -13
 Status code returned 0xc000006d STATUS_LOGON_FAILURE
 CIFS VFS: \storageaccountname.file.core.windows.net Send error in SessSetup = -13

the /etc/fstab file looks like this

//storageaccountname.file.core.windows.net/fileshare_name /path/to/mountdirectroy/ cifs nofail,vers=3.0,credentials=/etc/smbcredentials/mycredentails.cred,uid=mysql,gid=mysql,dir_mode=0750,file_mode=0750,serverino 

where mycredentails.cred looks like

username=storageaccount_name
password=storageaccount_key

I already checked the key and the username, they are correct

any help will be appreciated !