toolsignI was looking through our TechNet Wiki this morning and came across a great article that written by our very own Junaid Jan, Support Escalation Engineer on our Forefront Edge Team. In it, he talks about troubleshooting an issue where you’re getting error " The operation failed 0x80000400 " while joining a Microsoft Forefront Threat Management Gateway 2010 server (TMG 2010 Server) to an EMS Array:

If you’re using a TMG 2010 Server and running into this issue then his article can probably help you get it straightened out:

Getting error " The operation failed 0x80000400 " while joining TMG server to an EMS Array (

J.C. Hornbeck | Knowledge Engineer | Management and Security Division

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