[Samba] Stale Microsoft Office temp files

[Lorenzo Milesi]

Hi.

We're having a strange issue: we have several office temp files left around even when files get closed. 
Right now there are no open files on Samba, but there are more than twenty lock files around.

So, given that the file has been accessed correctly by the user and has been correctly saved (no data loss has been reported), what could prevent Office from deleting its files? 
Any suggestion on where to look at to debug the issue?

Thanks

This wasn't happening with Samba 3.x.

Samba 4.3.11-Ubuntu. 
Config follows:

 [global]
     server services = s3fs, rpc, nbt, wrepl, ldap, cldap, kdc, drepl, winbindd, ntp_signd, kcc, dnsupdate
     realm = brivaplast.lan
     ldap server require strong auth = no
     netbios name = SMBSERVER
     workgroup = DOMAIN
     server role = active directory domain controller
     log level = 5
     idmap_ldb:use rfc2307 = yes
     log file = /var/log/samba/log.%m
     ea support = yes
 [users]
          path = /home/users/
          read only = no
 [profiles]
    comment = Users profiles
    path = /home/profiles
    read only = no
     browsable = no

 [CONDIVISI]
 path = /home/CONDIVISI
 read only = No

-- 
Lorenzo Milesi - lorenzo.milesi at yetopen.it

YetOpen S.r.l. - https://www.yetopen.it/
Via Salerno 18 - 23900 Lecco - ITALY -
Tel +39 0341 220 205 - Fax +39 178 6070 222

Think green - Non stampare questa e-mail se non necessario / Don't print this email unless necessary

-------- D.Lgs. 196/2003 e GDPR 679/2016 --------
Tutte le informazioni contenute in questo messaggio sono riservate ed a uso esclusivo del destinatario.
Tutte le informazioni ivi contenute, compresi eventuali allegati, sono da ritenere confidenziali e riservate secondo i termini
del vigente D.Lgs. 196/2003 in materia di privacy e del Regolamento europeo 679/2016 - GDPR - e quindi ne e' proibita l'utilizzazione ulteriore non autorizzata.
Nel caso in cui questo messaggio Le fosse pervenuto per errore, La invitiamo ad eliminarlo senza copiarlo, stamparlo, a non inoltrarlo a terzi e ad avvertirci non appena possibile.
Grazie.

Confidentiality notice: this email message including any attachment is for the sole use of the intended recipient and may contain confidential and privileged information;
pursuant to Legislative Decree 196/2003 and the European General Data Protection Regulation 679/2016 - GDPR - any unauthorized review, use, disclosure or distribution
is prohibited. If you are not the intended recepient please delete this message without copying, printing or forwarding it to others, and alert us as soon as possible.
Thank you.