Hey, sorry for the late answer, I have a busy time currently.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
When you try to connect to Multimedia and it fails the first time and Windows prompts you again for the credentials, what happens when you re-enter the credentials? Does it fail again, and forever in a loop until you give up? Does the NAS access log show user 'Raphael' attempting to login over IPv6 each time?
Yes, it just asks me every time again for the same credentials, in a loop. And yes, all time time, my account "Raphael" is showing up trying to connect over IPv6.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
When you connect to a network share that works (Public or Raphael for example), what is shown in the access log? Which IP address is used in that case, IPv4 or IPv6?
It shows the exact same entry, with the same IP(IPv6), but successful connection.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
Have you tried disabling IPv6 on the NAS, temporarily, to see if it might make a difference connecting to Multimedia from Windows?
Okay, I just did that. It's the exact same result, sadly.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
Are you running any multimedia "apps" or "services" on the NAS, which may or may not be using the Multimedia folder?
I'm using Plex on the NAS, but it's not directly using the Multimedia folder, but a folder named "Filme" within it.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
Does the NAS show up in the 'Devices and Printers' control panel on Windows? (*)
Windows 10 Settings > Devices > Bluetooth & other devices > Devices and printers (listed under 'Related settings' section)
Nope.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
Is 'Service Discovery' turned on on the NAS? (*)
QNAP Control Panel > Network & File Services > Service Discovery > UPnP Discovery Service > Enable UPnP Discovery Service
Nope, that one is disabled.
Mousetick wrote: ↑Mon Feb 01, 2021 11:01 pm
Do you have any credentials saved on Windows that might used for the NAS? (*)
Windows 10 Search "Credential Manager" > Pick first result > Windows Credentials. Look for anything that doesn't look like gibberish and has 'Raphael' as the username.
Nope on this point as well.
---
What I just noticed now, when I enter my correct credentials, I'm told that access is restricted. When I'm entering wrong credentials, I'm told that the credentials are wrong?
Also, the Multimedia share is a default share by QNAP, I can't delete it or anything.. Maybe thats part of the problem.. for whatever reason.
I also now changed my local username and password of my computer to be equal to the username and password used on the NAS, but it is still failing.
Today I also wanted to try to connect my android phone to the NAS using an app and SMB, but there I have the exact same issue: I can connect to e.g. public share, but not to the Multimedia share. At this point I'm thinking of just abandoning the default Multimedia share and creating a new custom one, which would probably work.