ipsec service cannot start error: "cannot find the file specified"

In Windows 2003 Citrix server, ipsec service cannot start error: "cannot find the file specified"
Resolution:
To resolve this issue, follow these steps:

1. Delete the local policy registry subkey. To do this, follow these steps:
   1. Click Start, click Run, type regedit in the Open box, and then click OK.
   2. In Registry Editor, locate and then click the following subkey:
      HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\IPSec\Policy\Local
   3. On the Edit menu, click Delete.
   4. Click Yes to confirm that you want to delete the subkey.
   5. Quit Registry Editor
2. Rebuild a new local policy store. To do this, Click Start, click Run, type regsvr32 polstore.dll in the Open box, and then click OK.
3. Verify that the IPSEC Services component is set to automatic, and then restart the server.