Why on the Saia PCD Supervisor, after an automatic logout or a restart of the server, the last displayed page is shown without the DeviceTemplate menu when logging in again?

FAQ #102057

The reason for this is, that the Niagara web server sets a cookie called "niagara_origin_uri" with the latest visited ord.

This cookie is valid until page is closed or reloaded. he deviceTemplate cannot prevent this from happening.

The problem occurs in all Saia PCD Supervisor versions.

Depending on the last visited page and the settings in the supervisor, the image may look like this or similar:

 

Correct it looks like this:

 

 

Workaround

The "niagara_origin_uri" is not set if Same Site option is configured to "none" in a Secure context (HTTPS).

 

Niagara

1. Go to "Station -> Config -> Services -> WebService".

2. Set the Option "Same Site" to "None".

3. And make sure that HTTPS is active

 

Browser

1. Clear all cookies at least for the Niagara webpage.

- How to in in Chrome

- How to in Firefox

- How to in Edge

 

Note: 
You must connect via HTTPS to the Niagara-Webserver, if not the solution may not work or the page may not work at all. (May depend from the browser).

This will only work with the following Browser versions (or newer versions):

 

PC:

- Google Chrome 80

- Edge 86

- Firefox 69 (See  note below)

- Internet Explorer (Not supported!)

- Opera 71

- Safari (Not supported!)

 

Mobil:

- WebView Android 80

- Chrome Android 80

- Firefox Android (Not supported!)

- Opera Android 60

- Safari auf iOS (Not supported!)

- Samsung Internet 13

 

Note:

Firefox for PC has not yet the option "Secure required" for the "SameSite=None" attribute by default (will be default in the future).

1. It need to be configured by typing "about:config" into the address bar

2. Search for "SameSite"

3. Set "network.cookie.sameSite.laxByDefault" to true.

4. Set "network.cookie.sameSite.noneRequireSecure" to true.