Does the Upload button work?
I don’t think that the network is an issue here, since you see the server interface correctly displayed.
Could you open the developer tools of your browser and then try to drag/drop a file into the inbox? Is the browser’s developer console displaying any error messages in this case?
And I found this:
no idea if that could help.
The Upload icon in the toolbar does not work (see my second message on this thread).
Thanks for the tip, but none of the 3 fixes from the suggested website caused drag and drop to work as expected.
Regarding the Firefox console, the following appears when I click on “Inboxes” in the DT web interface :
That’s even before attempting a drag and drop of files into the “Inboxes”.
When I try to drag and drop a file from the desktop into the file list (containing “965f-…” and “Pflanzenschutz…”) the Firefox console does not report anything new.
Are you running DT 3.9.2?
There’s apparently a JavaScript error happening (c not defined). If that causes the problem? No idea. But in general, a JS error is not a good thing.
This is what I get when clicking on “About”, but I’m not sure if the version number applies to the desktop app running on the Mac or the DT-Server running in the background.
The webserver is internal to the application so the version number applies to both.
Update to 3.9.2 and see if the behavior improves.
PS: You should stay current with the operating system and our point releases.
Is it not more likely some browser setting somewhere deep in Registry or Preferences?
I’d think not in this case (but am willing to be corrected). There are always improvements going on in DT and I know there have been modifications to the websharing UI in the past few releases.
I think this was a known issue that was fixed in the latest release; I remember it was a problem for me in 3.9.1. From the release notes to 3.9.2:
Server — Drag-and-drop to the item list in the web sharing interface in a browser didn’t work. Fixed.
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Thanks for all your help! I will tell my IT-guys to upgrade me to 3.9.2 as soon as possible and let you know what happens.
I told you so! 
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I discovered the cause of my problem with drag and drop. It has to do with the URL for accessing the DT-Server from a web browser.
After successfully logging in using the login page https://192.168.88.3:57272/, the URL changes to https://192.168.88.3:57272/app/devonthink
If I subsequently disable the VPN, or disconnect the computer from the internet (for example sleep mode or restart) and attempt to reload that URL, drag and drop fails. That is what was happening, because I always “reload last session” when starting Firefox. In fact, access to the DT-Server is renewed, but the DT-Server has presumably logged me out and only provides read-only access. As far as I can tell, the user is not made aware of this subtle but critical difference.
If I reenter https://192.168.88.3:57272 as the URL, and log myself in again, drag and drop works as expected - even without upgrading to 3.9.2
Case closed. Thanks for all your help and suggestions!
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Glad to hear it but please make sure you stay current with the point releases. There aren’t just improvements but also fixes in each of our releases. And if you look at our release notes, you’ll see there are many of both.
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