Issue

Any Staging Solvay ONE page displays this (KO):	Instead of this (OK):

Do not confuse this case with: No more "SDL Tridion" button in a single page of the Staging

Solution

Is Global protect connected?

Deploying the running programs of Windows and look for the "Global protect" icon. How does it look like?

Connected?	Not connected?

If "Not connected" >> Please contact your local service desk to solve this issue.

Waiting for an adapted solution from the service desk, you can try the suggested turn around

UPDATE (23 sept 2020) : Issue linked to old SSL certificate still cached on Internet Explorer, affecting chrome.

To clear the SSL state in Chrome on Windows, follow these steps:
Open Internet Explorer – click Settings icon, and then click Internet options.
Click the Content tab.
Click “Clear SSL state”, and then click OK. 
Restart Chrome.

Possible turn around

This problem seems linked to an unidentified network issue, but you could try to apply the following steps to bypass the issue.

1. Access the following address in a new tab: https://contentmanager.solvay.com/WebUI/Editors/SiteEdit/Views/Bootstrap/Bootstrap.aspx?mode=js

2. Click "ADVANCED"

3. Click "Proceed to contentmanager.solvay.com (unsafe)"

4. Do not pay attention to this page content, just close the tab

5. Back to the Solvay ONE Staging, refresh the current page with F5

Then you should get "SDL Tridion" button back and be able to use Tridion again.

If the issue occurs again later, please re-apply this procedure.