Logging may fail when Forefront Threat Management Gateway 2010 runs on the English version of Windows Server 2008 or Windows Server 2008 R2, and the MUI Language Packs are installed

To resolve this problem, remove the original permission for "NT AUTHORITY\NETWORK SERVICE" from the localhost\MSFW database. Forefront Threat Management Gateway will automatically re-create the permission correctly. To do this, follow these steps:

1. Run an administrative command prompt as a user member of the "Forefront TMG Array Administrator" group or the "Forefront TMG Enterprise Administrator" group. To do this, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
2. At the command prompt, type the following command, and then press Enter:
   sqlcmd –E –S localhost\MSFW
3. Run the following SQL sentences:
   sp_revokelogin ‘NT AUTHORITY\NETWORK SERVICE’
   go
   exit

Note Threat Management Gateway will automatically re-create the SQL express security descriptor by using the correct "Network service" entry, depending on the computer's regional settings.