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ITsVISTA KB-Link: KB2639793

“0x000000C2″ Stop error occurs when you use IPsec on a computer that is running Windows Server 2008, Windows Vista, Windows Server 2008 R2 or Windows 7 in a network that uses IPsec NAT-T security

Consider the following scenario:

  • You join a computer to a network. The computer is running one of the following operating systems:
    • Windows Vista
    • Windows Server 2008
    • Windows 7
    • Windows Server 2008 R2
  • The network is configured to use Internet Protocol security (IPsec) network address translation traversal (NAT-T) security.
  • You use IPsec to communicate with another computer in the network.

In this scenario, you randomly receive a Stop error message that resembles the following, and then the computer restarts:

STOP 0x000000C2 (parameter1, parameter2, parameter3, parameter4)


  • This Stop error describes a BAD_POOL_CALLER issue.
  • The four parameters in this error message vary, depending on the configuration of the computer.
  • Not all “0x000000C2″ Stop errors are caused by this issue.
There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB2639793.

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