WHen you run out of memory in Windows 2000, the Cryptographic Service Provider ( CSP) may not be able to read the computer's Globally Unique Identifiers ( GUID) in the registry. If this happen, it creates a new one and overwrites the entry in the registry.

Since the new GUID is unknown, other computers, services, and programs can't address it. Stopping and starting services becomes impossible.

DO NOT let this happen to you! Follow these simple steps:

1. From a command prompt, or batch file:

    regedit /e c:\GUID.reg "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography"

2. Edit the C:\GUID.reg and delete all the subkey entries, leaving:

Windows Registry Editor Version 5.00

\[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\]
"MachineGuid"="1234abcd5678efgh..etc.."
If the problem ever happen, import the C:\GUID.reg file and restart your computer.

NOTE: This will be fixed in Service Pack 1.