Discovery Task does not find anything

Hi,
From some days, when i lunch the find task on my ams (NT mode) don’t find any pc…
Usually, when i start the find task, i was able to see the founded pc in
result window, also the PCs already present on the catalog. Now i see only
“task start” and “task finish” messages without any pc. Is it OK? The task
is still finding the PC in this way? How can i verify it? I have 1600 pc in
my catalog, it’s too hard verify one-by-one the pc…please help me.
Michele

Please let me know the entire scenario, did you reinstall the console?, if so, did you change the communication port between clients and server? any change on your switches ?

Best Regards!
Sergio Ariza.