Squire having depressing experience on network (9)
I believe the answer is:
landowner
'squire' is the definition.
(I've seen this before)
'depressing experience on network' is the wordplay.
'depressing experience' becomes 'downer' (I've seen this before).
'on' is a charade indicator (letters next to each other).
'network' becomes 'LAN' (Local Area Network).
'downer' after 'lan' is 'LANDOWNER'.
'having' is the link.
(Other definitions for landowner that I've seen before include "Squire, perhaps" , "One with estates" , "man of property" , "One with title to an area" , "One possessing estate" .)