Permissions issue in OnlyOffice when trying to write to an exFAT partition


When I try to save a file to an exFAT partition, OnlyOffice gives me the following error:


The way I have the exFAT partition mounted is as follows:

UUID=688F-6669 /home/my_user/Data exfat rw,user,nodev,async,auto,defaults,uid=1000,gid=1000,umask=022 0 0

I have tried other applications and they can write directly to that exFAT partition from Linux.

Does anyone know how to solve this problem?


Hi @Alden20,

Permissions don’t apply to an exfat partition; it’s incapable of supporting them, for Linux purposes. Try this instead in your /etc/fstab file:

UUID=688F-6669   /home/my_user/Data  exfat   defaults,nofail  0   0

Some useful reference information:


Well if other programs have no problem then it must be something about OnlyOffice. Since it is proprietary you would need to ask the OnlyOffice Support.

My guess is that it tries to write a file with specific permissions, which doesn’t work on exfat, since it is just an overlay and set on mount time.

umask 022 means → Dirs 755 Files 644