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The memory dump must be taken when the system has leaked a significant number of ports.
#Poolmon.exe startup command windows 10 driver#
If a driver (kernel mode) is leaking ports, then a complete memory dump must be sent to Microsoft Support for analysis to know which driver is responsible. Please review it and use at your own risk.īe aware that this only detects user mode port leaks.
#Poolmon.exe startup command windows 10 code#
Warning: This script is provided as sample code only. If you suspect ephemeral port exhaustion, then consider running the following Powershell script called “Log-EphemeralPortStats.ps1”: The result is connection failures similar to “Couldn’t connect to X, due to no ports available from the end point mapper”. Some applications and services such as Microsoft Exchange Server CAS servers can be very “chatty” and might actually use all 16,383 ports within a two minute time period. Windows Server 2008 and later use the IANA range which uses the ports between 4915 providing 16,383 ports. This allows any lingering packets on the network to be ignored.
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When an outbound connection is finished, the port associated to the connection is put into a TIMED_WAIT state for two minutes by default. You can either increase the port range which may just delay the problem or you can try to identify the cause.Įphemeral ports are range of ports that Windows and Windows Server use for outbound communications over the TCP/IP network protocol. If the system immediately recovers, then you know you are dealing with this issue. If the system is not responding, then try increasing the port range (discussed below) – this change is effective immediately. This results in a lot of connection failures such as database and/or domain controller connections.
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When Windows or Windows Server is out of ephemeral/outbound/dynamic network ports, it will not be able to establish any outbound network connections.