Cannot save file or create lock on file on Samba server from Windows 7

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oHi,

I've problems with LibreOffice (6.1.3.2 x64 Windows) on Windows 7:

• I cannot open any file to edit it from our samba server: 'The lock file could not be created for exclusive access by LibreOffice, due to missing permission to create a lock file on that file location or lack of free disk space'

• I also cannot save any file to our samba server: 'Error saving the document Untitled 1: Object not accessible. The object cannot be accessed due to insufficient user rights'

It works with Microsoft Office products. I tried elevating LibreOffice to admin. I cleared any potential lock file. ... It does not work.

Please, help me, you are my last hope ;__;

-Fin'