[Help] (2)problems with the update to TOS 6.0.794-01324 [SOLVED]

[tiem]

Hi!
The same topic (viewtopic.php?t=9393) was closed. I decided to create the new one.

F4-425 Plus user here. Faced the same issue.
After updating to the latest OS version I can no longer access to the desktop or login in using TNAS PC For Windows or Phone (The error is: "Connection timed out, please try logging in again" in the app).
However, SSH, WebDAV, TerraSync, and all my container services on the NAS remain accessible.
TNAS IP address in the local network is static.
I don't use the TNAS Online, I have a static global IP address.
I didn't change my TNAS IP address\port in the local network.
Reboot (via SSH or physical power off) doesn't help.

[CursaYang]

Hello, based on your description, it seems to be an issue with the TOS desktop-related services.
Please visit the official website's live chat to schedule an appointment with an engineer for remote troubleshooting. When making the appointment, please include the link to this forum post.

[tiem]

Thanks to the support team!
To all who seek the solution:
My problem appeared because of the nginx start error. You need to start it manually.

Steps:
1. Log in via ssh to the TNAS
2. Check the nginx status:

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systemctl status nginx.service

In my case I got the message:

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× nginx.service - A high performance web server and a reverse proxy server
     Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2025-12-16 08:29:56 MSK; 3h 26min ago
       Docs: man:nginx(8)
        CPU: 519ms

Dec 16 08:29:55 TiemNAS systemd[1]: Starting A high performance web server and a reverse proxy server...
Dec 16 08:29:55 TiemNAS nginx_prepare[4488]: No configuration errors found.
Dec 16 08:29:55 TiemNAS nginx_prepare[4488]: Configuration validation failed, restoring original file.
Dec 16 08:29:56 TiemNAS nginx[4630]: nginx: [warn] the "ssl" directive is deprecated, use the "listen ...
 ssl" directive instead in /etc/nginx/nginx.conf:65
Dec 16 08:29:56 TiemNAS nginx[4630]: nginx: [emerg] host not found in upstream "api.github.com" in /etc/n
ginx/AppAccessControl/AppAccessControl-transmission.conf:26
Dec 16 08:29:56 TiemNAS systemd[1]: nginx.service: Control process exited, code=e
xited, status=1/FAILURE
Dec 16 08:29:56 TiemNAS systemd[1]: nginx.service: Failed with result
 'exit-code'.
Dec 16 08:29:56 TiemNAS systemd[1]: Failed to start A high performance web server
 and a reverse proxy server.
Dec 16 08:32:02 TiemNAS systemd[1]: nginx.service: Unit cannot be rel
oaded because it is inactive.

3. Start the nginx:

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systemctl start nginx.service

4. Repeat the command:

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systemctl status nginx.service

You should see the line in the message:

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Active: active (running) since Tue 2025-12-16 11:57:16 MSK; 1s ago

After that, I’m able to connect to the Desktop