Versions / Builds Affected2011
Problem Summary(This issue usually starts as one of the "licencing issues" as the non-working licence key is one of the symptoms.)
The WebMonitor Webfilter plugin is not visible in TMG and he WebMonPlg.dll can't be registered manually.
TT / JIRAIDWEBMON-67
How to IdentifyWhen registering the WebMonPlg.dll manually there will be an RegSvr32 popping up with the error code "0xfffffffe".
Now you need to continue checking:
In the WebMonPlgReg.txt log (can be found in the TMG folder next to the WebMonPlg.dll) you will see:
"Failed to add the GfiWebmonitor web filter. Error code is c0040357"
(If that log WebMonPlgReg.txt should not exist, you can ask your PSG to provide a tool to identify the issue without it.)
Workaround / Fix DetailsThe exact reason for this issue is unknown, and it has only been solved in past cases by re-installing TMG.
Required Actions1. Inform the customer that this is likely an issue on their TMG
2. Attach this article
3. Escalate case