Failed to open filtering list DLL

This article applies to:

• WebMarshal 7.X
• Upgrade from previous version

Symptoms:

• Array Manager log error: Failed to load policy: System.Exception: Failed to open filtering list DLL.
• Node Controller log error: Failed to load filtering list DLL "MCMarshal.dll".
• Node Controller log error: Failed to load filtering list DLL "MCSmartFilter.dll".

Causes:

• The URL filtering list "MarshalFilter" or "SmartFilter" is present in the configuration.
• As noted in the Release Notes, these filtering lists are not supported and cannot be licensed. They must be removed from configuration before upgrade.
• The linking DLLs have been removed in version 7.X
• Some customers with expired trials of these filtering lists may have been unaware that they were still present in the list of URL filtering lists.

Resolution:

To resolve this issue after upgrading, it is necessary to manually edit the WebMarshal configuration file.

• If you have any concern about following these instructions, contact Trustwave Support or your reseller for assistance.

1. On the WebMarshal Array Manager server, in the WebMarshal installation folder, open the file ...\ArrayManager\Policy\ArrayPolicy.xml
2. Make a backup copy of the file.
3. Locate the section <FilteringLists
4. Delete the lines that refer to the MarshalFilter and/or Secure Computing SmartFilter lists.
   
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5. Save the file.
6. Repeat the above steps for the file ArrayPolicy.Working.xml
7. Start the Array Manager.
8. Open the WebMarshal Console. Commit configuration.
9. Using the Server Tool on the nodes, start the Controller.

Notes:

• The Trustwave Web Filter Database is the supported externally updated URL filtering list for WebMarshal.