Troubleshooting
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      Endless loading screen in LMS in Mozilla Firefox browser

        Symptoms 

        On attempt to access the LMS via Mozilla Firefox the following white screen appears: 



        Cause 

        By default third-party cookies are not allowed in Firefox: by default it is cross-site tracking cookies and it isolates other cross-site cookies option. 

        Resolution

            1. In Firefox open Settings > Privacy & Security, check that Enhanced Tracking Protection is in 'Standard' mode:


            2. Scroll down to 'Cookies and Site Data', click Manage Exceptions.

            3. Type in address 'https://idp.constructor.app' and click Allow:

         

            4. Click Save changes:

         

            5. Open LMS website and log in.