Hello.

For the last 4 months I was able to use different Catia apps. It ended on November 08th. Everytime I try to start an app the pop-up window for downloading the 3DExperience launcher pops. Obviously, it was already installed so I tried the problem solving options with no favorable results. Run Diagostics shows all lines checked and all port numbers I tried (numbers provided by Launcher) failed the same.   

 Also, downloaded the installer and tried Repair, Removing and Reinstalling and also removing from Windows add/remove programs and reinstaling again but situation doesn't change.

I've spent many hours navigating 3DExperience platform for help and solution but unfortunatelly, still stuck in the "Download Launcher loop".

Some additional info (windows updates, other pop-up messages) in the attachment below. 

Examinations are coming!! Please help!!

Edu 3DEXPERIENCE