Windows 7 “Insufficient System Resources” When Connecting to Shared Folders Over Network (SMB)

When connecting to a Windows 7 PC over SMB file sharing, you may receive an error such as “Insufficient system resources exist to complete the requested service”.

This is a known issue with Windows XP, Windows Server 2000 and Windows Server 2003, but a number of users have reported that the solution explained here also fixes Windows 7.

The installed value of the IRPStackSize parameter is often too small to allow additional network clients to connect to the Windows file sharing service.

Microsoft have published Knowledge Base article KB285089 which describes how to increase the value of the setting to fix the problem.

Here are the instructions for making the change, but see the Microsoft article if you need more help.

• Click Start, click Run, type regedit and then click OK.
• 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.

  (The name is case-sensitive)

• Click Edit, and then click Modify.
• Click Decimal and in the Data Value box, type 30, and then click OK.
• Restart Windows and then re-try to connect with FileBrowser.