JSI Tip 4074. Active Directory Sites and Services snap-in generates an access violation?

When you open the Active Directory Sites and Services snap-in, you receive:

The instruction at 0x71d80a80 referenced memory at 0x00000000 The memory could not be read. Click on Ok to Terminate the program.

NOTE: The exception address may be different.

NOTE: Instead of the error message, the program may quit unexpectedly.

This is generally the result of a missing or corrupt set of registry entries.

NOTE: I would export any keys you intend to import so you will have a backup. You may want to check the backup against the import files and merge any differences.

If the HKEY_CLASSES_ROOTLDAP key is missing or damaged, import:

Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOTLDAP]@="URL:LDAP Protocol""EditFlags"=hex:02,00,00,00"URL Protocol"=""[HKEY_CLASSES_ROOTLDAPClsid]@="{228D9A81-C302-11cf-9AA4-00AA004A5691}"[HKEY_CLASSES_ROOTLDAPshell][HKEY_CLASSES_ROOTLDAPshellopen][HKEY_CLASSES_ROOTLDAPshellopencommand]@=""D:\Program Files\Outlook Express\wab.exe" /ldap:%1"

If the HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc} key is missing or damaged, import:

On a Windows 2000 domain controller

Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}] @="ADs LDAP Pathname Descriptor Object"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}InprocServer32]@="activeds.dll""ThreadingModel"="Both"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}ProgID] @="Pathname"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}TypeLib] @="{97d25db0-0363-11cf-abc4-02608c9e7553}"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}Version] @="0.0"

On a Windows 2000 member

Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}] @="ADs Pathname Object"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}InprocServer32]@="activeds.dll""ThreadingModel"="Both"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}ProgID] @="Pathname"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}TypeLib] @="{97d25db0-0363-11cf-abc4-02608c9e7553}"[HKEY_CLASSES_ROOTCLSID\{080d0d78-f421-11d0-a36e-00c04fb950dc}Version] @="0.0"