At the end of the installation of Symantec Mail Security for Microsoft Exchange (SMSMSE), this error message appears:
Error 1904.Module C:\Program Files\Symantec\SMSMSE\<version>\Server\SAVFMSELU.dll failed to register. HRESULT – 2147220473. Contact your support personnel.
SMSMSE installer was not able to register the SAVFMSELU.dll.
Symantec is aware of this issue. Subscribe to this article as it is updated as more information is available.
Register SMSMSE with LiveUpdate manually using the steps in this article: How to Register Symantec Mail Security for Exchange (SMSMSE) With LiveUpdate Manually.
If registering the DLL does not resolve the issue uninstall Liveupdate and reinstall it.
If there are still issues use the following article to troubleshoot the LiveUpdate installation: How to Troubleshoot a failed Windows LiveUpdate installation.