Hi,
Assuming you are talking about how many threads are allowed in multi-threaded environment, it depends on the machine where CRM 2013 is running. Suggest reading following forum:
http://stackoverflow.com/questions/481900/whats-the-maximum-number-of-threads-in-windows-server-2003
Hope this helps.
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Minal Dahiya
blog : http://minaldahiya.blogspot.com.au/
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