SSMS Timeout when browsing for sql servers? When connecting to a sql server instance one has the option of browsing the network for sql instances.  This used to work for (returning ~50 entries) us until we were migrated into a larger domain with a couple thousand machines, with the possibility of a few thousand sql instances.  It now searches for 2-3 minutes then the list is empty.

Does anyone know if there is a timeout on how long it will search?  If so, is the timeout configurable?

(I know 2-3k servers isn't useful to scroll through - but still need an answer)
The most likely reason for this is port 1434 UDP being blocked on the new network.

An in-depth analysis of how SQLBrowser messaging works can be found here: https://www.mssqltips.com/sqlservertip/2057/why-listing-all-of-your-sql-servers-does-not-always-work/
That article also lists other reasons for this issue, like the SQLBrowser service not running on the servers, but based on your description of the problem, it looks like the new network you are working on is isolated by a firewall that blocks UDP traffic on port 1434.