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. You may have to increase this number for certain transports, for media access control (MAC) drivers, or for file system drivers. Each stack uses 36 bytes of memory for each receive buffer. This value is set in the following registry subkey:
If the subkey is not present, you can use Registry Editor to add the subkey. To do this, follow these steps:
- Click Start, click Run, type regedit, and then click
- Locate and then click the following registry subkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters
- Click Edit, point to New, and then click DWORD Value.
- Type IRPStackSize, and then press ENTER to name the value.
Note Type IRPStackSize exactly as it is displayed. The value name is case sensitive.
- Click Edit, and then click
- In the Data Value box, type the value that is appropriate for the network, and then click OK.
Note On some computers, values from 33 through 38 can cause problems. For information about a hotfix that addresses these problems, click the following article number to visit the article in the Microsoft Knowledge Base: