IRPStackSize...WTH is it and what does it do?!

Golgatha

Lifer
Jul 18, 2003
12,379
1,004
126
http://support.microsoft.com/d...x?scid=kb;en-us;177078

Basically I had to create the IRPStackSize DWord value they mention, set the value to 25 (15 did not work), and reboot both machines before my shares started working again. I was using simple file sharing under WinXP Pro for nearly a year without issues, but a couple of days ago I started to get this error:

Event ID : 2011
Source : Srv
Description: The Server's configuration parameter "IRPStackSize" is too
small for the server to use a local device. Please
increase the value of this parameter.

My event log showed this error on my laptop when I tried to access a shared folder on it from my desktop downstairs. My main question is what does the IRPStackSize Dword value change and why would this error come from nowhere after my shares had been working for a year?

Edit: I'm using Nod32 for anti-virus, so it shouldn't be a Symantec issue which was mentioned in the KB article.
 

Nothinman

Elite Member
Sep 14, 2001
30,672
0
0
The very first Google hit for IRPStackSize is a MS KB article that says "The IRPStackSize parameter specifies the number of stack locations in I/O request packets (IRPs) that are used by Windows 2000 Server, by Windows Server 2003, and by Windows XP."