OnlyOffice Desktop Editors: check your internet connection error

Hi everyone, first time posting here.

We’ve recently started installing OnlyOffice Desktop Editors on our clients’ PCs, and everything has been working well. However, on some PCs, we’re encountering a strange issue:

(Translated from Italian)
“Check your internet connection. You cannot edit the document because your internet connection is interrupted or limited. Check your connection and reopen the document to continue.”

This happens with every document, even local ones. Creating a new blank document also triggers the same error.

We are using the latest version 8.3.1.25 (downloaded from onlyoffice.com).

Are there any specific domains that OnlyOffice Desktop Editors need to access for proper functionality?

The strange part is that OnlyOffice works fine on most PCs within the same local network and firewall settings, making this issue even more strange.

Any insights would be greatly appreciated!

Thanks in advance,
Giacomo

Hello @Giacomo
Sorry for the late reply. The described situation looks strange. Could you please enable debug mode and reproduce the issue? Running in debug mode on Windows | ONLYOFFICE
We need to take a look at Console and Network tabs in the debug mode once the issue is reproduced.