NPP is used by http.sys to store connection information, so if it's exhausted then no one can connect to http.sys (and hence IIS).
Someone asked about tracking leaks in NPP. You can use Poolmon to track down what is leaking NPP: http://www.adopenstatic.com/cs/blogs/ken/archive/2006/07/10/Using-PoolMon-_2800_Pool-Monitor_2900_-to-debug-kernel-memory-leaks.aspx Note: this NPP problem usually only exists in x86, and prior to Win2k3 SP2 (which change the NPP limits to be a portion of free memory rather than 128MB). In x64 builds, NPP is almost unlimited. Cheers Ken From: Ziots, Edward [mailto:[email protected]] Sent: Thursday, 21 January 2010 1:40 AM To: NT System Admin Issues Subject: RE: IIS Not serving Pages in Exch 03 I have seen this when the Non Paged Memory pools has gone over about 103MB for Exchange, it basically bombs out the IIS, and you have to reboot. It's a memory leak. Z Edward Ziots Network Engineer Lifespan Organization MCSE,MCSA,MCP+I, ME, CCA, Security +, Network + [email protected]<mailto:[email protected]> Phone:401-639-3505 ________________________________ From: Sam Cayze [mailto:[email protected]] Sent: Wednesday, January 20, 2010 12:13 PM To: NT System Admin Issues Subject: RE: IIS Not serving Pages in Exch 03 Well it's fixed now, can't test. Reset IIS and recreated all the exchange virtual directories, deleted ds2mb key, etc. Stable so far. Last time it happened I remember 'something' was listening on port 80. -Sam ________________________________ From: Ken Schaefer [mailto:[email protected]] Sent: Tuesday, January 19, 2010 8:02 PM To: NT System Admin Issues Subject: RE: IIS Not serving Pages in Exch 03 What, if anything is listening on port 80? Cheers Ken From: Sam Cayze [mailto:[email protected]] Sent: Wednesday, 20 January 2010 3:24 AM To: NT System Admin Issues Subject: IIS Not serving Pages in Exch 03 This ugly problem started again today. Changing the password in the metabase didn't do the trick this time Telnet localhost 80 just quits and brings me back to the dos prompt. Nothing in the Event Logs All services seem to be running fine... Full reboot didn't do the trick. Idea!?!?! Thanks, Sam Cayze Information Technology Administrator ROLLOUTS ONSITE * ON DEMAND LinkedIn Profile<http://www.linkedin.com/in/samcayze> Facebook Profile<http://www.facebook.com/samcayze> ________________________________ From: Sam Cayze [mailto:[email protected]] Sent: Monday, December 07, 2009 9:14 AM To: MS-Exchange Admin Issues Subject: IIS Not serving Pages in Exch 03 My IIS is up and running but not actually serving up any pages, killing OWA and EAS. Nothing in Event Logs. Nothing in IIS logs. Almost every service has been restarted for troubleshooting. Can't bounce the server today (Maybe at lunch). It worked all weekend, perhaps this started after the full backup of the server ran last night? Help!?! Thanks, Sam Cayze Information Technology Administrator ROLLOUTS ONSITE * ON DEMAND LinkedIn Profile<http://www.linkedin.com/in/samcayze> Facebook Profile<http://www.facebook.com/samcayze> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
