No more screen display

Hello everybody
VS 6.0.0.0
First excuse my poor English but i'm sure you'll understand me.
Recently I changed my W 10 version from 2004 back to 1909. ( printer problems)
Since impossible to use Mezzmo.
I use it since several years and I know it well. Before Mezzmo I have used several differents tools since 10 years and I know the way of doing.

On my TV the screen DLNA appears but it is always empty.
My" bibliotheque" contains exactly the same things since at last 3 years. Films + Films A to Z (videos) and Danse ( music)
The server is ON.
In W 10 all is OK about parameters.
My TV Smart receive absolutely all from Ethernet and WiFI. Netflix, Canal, Disney and Prime works perfectly.

I changed absolutely nothing in Mezzmo config since several years. I don't understand. 10 years experience for nothing !

Could be a problem with the Bibliotheque ? Mezzmo screen appears but not its contains ?

Something to do ? Delete all and start again from zero ?

3 screen captures..
Thanks a lot

It could be an issue with permissions if the server is running as a service. Try going to 'Media Server Settings' in Mezzmo and set the server to run as a Windows console app to see if the files are listed on the TV