stephenandrews,
Hmmm, I've not had that problem yet. It works just fine for me, but maybe you need to delete the file entirely (MS Office will rebuild another one). Just wondering though, are you running some kind of Exchange or other e-mail server environment? I'm not, so there might be another difference...
I'll just post the KB article I referenced earlier:
Error: "The add-in 'C:\Program Files\NavNT\vpmsece.dll' could not be installed or loaded..."
Situation:
When you start Microsoft Outlook, an error message appears. It states:
"The add-in 'C:\Program Files\NavNT\vpmsece.dll' could not be installed or loaded. This problem may be resolved by using Detect and Repair on the Help menu. Unable to load "C:\Program Files\NavNT\vpmsece.dll". You may be out of memory, out of system resources, or missing a .dll file."
Using the Detect and Repair option, as suggested in the error message, does not solve the problem.
Solution:
This error occurs when Norton AntiVirus Corporate Edition (NAVCE) was uninstalled from your computer prior to the installation of Symantec AntiVirus Corporate Edition (Symantec AV).
The default installation directory for Symantec AV 8.0 is: C:\Program Files\Symantec Client Security\Symantec Antivirus
However, Outlook is looking for Vpmsece.dll in the original NAVCE location: C:\Program Files\NavNT
To solve the problem, search your computer for Extend.dat and delete the file. Extend.dat will be recreated the next time you open Outlook, and the Exchange plug-in will be installed when the first email is opened. The default location of Extend.dat depends on the operating system:
Windows 98
C:\Windows\Local Settings\Application Data\Microsoft\Outlook
Windows NT 4.0
C:\WinNT\Profiles\%Username%\Application Data\Microsoft\Outlook.
Windows 2000/XP
C:\Documents and Settings\%Username%\Local Settings\Application Data\Microsoft\Outlook
In the path above, %Username% references the name of the profile currently logged on. To browse to this folder and locate Extend.dat, you must change Windows Explorer settings to show "Hidden Files and Protected Operating System files." For steps on showing hidden files, read the document How to show hidden files and protected operating system files in Windows.
Additional information about the cause of this error
When the Symantec AntiVirus Corporate Edition (Symantec AV) or Norton AntiVirus Corporate Edition (NAVCE) client e-mail plug-in for Microsoft Exchange is installed, an LDVP value is created in the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Client\Extensions
The LDVP value data includes the path to Vpmsece.dll, for example:
Value: 4.0;C:\Program Files\Symantec_Client_Security\Symantec AntiVirus\vpmsece.dll;1;00000011111
The next time you click the Outlook Inbox after installing the e-mail plug-in for Microsoft Exchange, the path to Vpmsece.dll from the LDVP registry value is cached in the Extend.dat file. From then on, every time you open Outlook and click the Inbox, Outlook checks to see if the LDVP registry value still exists, but uses the cached path to Vpmsece.dll from Extend.dat.
The problem occurs when you upgrade to a newer version of Norton AntiVirus Corporate Edition or Symantec AV using a new install location. When the previous version is uninstalled, the LDVP key is removed from the registry. During the install, a new LDVP value is created, which includes a new path to Vpmsece.dll. However, Outlook uses the older cached path to Vpmsece.dll from Extend.dat. This will not happen if you open Outlook and click the Inbox after uninstalling the previous version (but before installing the updated version), because the LDVP path is removed from Extend.dat if Outlook notices that the corresponding registry value was removed.
J.R.
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