I have Nextcloud Hub 10 (31.0.13) (not AOI) running via Docker on a Synology NAS device for a customer. All of their client machines run Windows 10 Pro and the official Nextcloud Desktop client has always worked fine on all of them until recently. I also can run the Desktop app on a desktop Linux workstation over the internet. Accounts occasionally would get signed out on some of the Win 10 Pro workstations (perhaps due to lack of consistent use), but signing back in was not a problem.
Recently two of the 5 workstations are refusing to connect to the server with the following error message:
The returned server URL does not start with HTTPS despite the login URL started with HTTPS. Login will not be possible because this might be a security issue. Please contact your administrator.
I always keep the server and clients up-to-date, and they are both the current version–Nexcloud Hub 10 version mentioned previously and Nextcloud (NC) Desktop for Windows version 4.0.5. The error above started appearing at version 4.0.4 and still appears after upgrading to 4.0.5. The error does not appear on the other 3 machines (all workstations and server are on the same network) neither when running 4.0.4 or 4.0.5. I’ve tried completely uninstalling NC Desktop on both machines (call them 2103 and 2105) and doing a fresh install of NC Desktop on them to no avail.
I’ve tried exporting debug information from them both, but the information in them isn’t very helpful to my eye.
I’m confused as to what is going on, but I suspect it is a conflict with another piece of software on the two machines. All of the machines are running Windows Defender + Norton without any special exceptions for Nextcloud desktop, so that should not be a problem. However, the biggest difference between the two machines having the problem and the other three is a massive application suite called Trimble Business. Both of them recently had upgrades to newer versions of the software and the license type changed. Right around the time of the upgrades is when Nextcloud started having problems.
I can’t uninstall Trimble to troubleshoot the issue because it’s a mission critical app for my customer’s business. Nextcloud is not as critical, but it would still be very helpful to figure out what’s causing the error I’m seeing on the two machines and getting it fixed.
I have two .zip files with exported debug info from Nextcloud Desktop that I’ve redacted the identifying info from. However, I cannot upload zip files here. How best can I share them so someone can review them to start seeing what’s going on? Beyond that, what can I do to further debug and troubleshoot this issue?
Any help is greatly appreciated!