I think I’ve stumbled upon an outbreak of “non-sharingitis.” If you create a file-sharing link from a room, then delete the link, and try to recreate the link, the file can no longer be shared; the app reports that the (requested) file cannot be found (even though it’s clearly there), and this affects all files that have gone through this process.

Docs version: 10
Type of installation of the DocSpace (docker, deb/rpm, exe, please point us to the installation guide that you used as well): Cloud
OS: Windows
Browser version: Tested on a Chromium-based browser (even though it appears to be a back-end issue)
ONLYOFFICE Community AI Assistant
This is an AI-generated response, not a reply from a human moderator. The suggested resources may help, but are not a confirmed fix.
This matches a previously reported DocSpace Cloud issue: after a public sharing link is deleted, recreating it fails with “The required file was not found,” potentially across multiple files and formats: Can't share spreadsheet
The documented workflow allows creating links from a room’s File info → Share menu, so this behavior is not expected: Managing and editing documents in Rooms | ONLYOFFICE Help Center
Since the matching report was reproduced by staff and provides no confirmed workaround or fix, this appears to require staff follow-up rather than further browser troubleshooting.
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Very useful this bot. At least I’m not the only one with this problem.