Windows ne support indexing réseau shares.
Vous pouvez encore search them, but c'est done in real-time sans indexing,
so may be quite lent.
Vous pouvez activer Offline Files for a réseau dossier by clic droiting it
and selecting "Toujours disponible offline".
Cela va basically copy the dossier to your ordinateur.
To make it searchable, vous allez need to add "Offline Files"
to Indexing Options.
None du above options are really practical.
The correct way to do that is to store the fichiers on Windows Server
avec the "Windows Search Service" role installé.
The server will index its shared dossiers, and the Windows client can
ensuite use this index.