Andreas

I am on Ubuntu 16.04.3. Just tested KeeWeb and it works fine. I will give Keepass2 another try with mono 5.2 in a few days though. Thanks for the instructions :-)

Neither of them provide Sync. Cheers

I don't think so. I can, as already said GET the database. Only PUTting (saving) times out

It seems to be a problem with mono and https. with http it works... Not sure if I want to run an http server, though

Yes, with windows it works -.-

I don't have an FTP server. Let me see if I can find Windows somewhere.

What I provided in the first post is all the log I can get. The server config basically looks like this: server { root /var/www; location /keepass/ { auth_basic "Access Restricted"; auth_basic_user_file "/etc/nginx/.htpasswd"; access_log /var/log/nginx/keepass.access.log; error_log /var/log/nginx/keepass.error.log; dav_methods PUT DELETE MOVE COPY; dav_access group:rw all:r; } } everything in /var/www is owned by www-data, who is also running the webserver. I can not think of a reason why it should...

Nope, does not work either. Same error