FDM Error When Trying To Login from the Web

Question

Hello,
We are on FDM 11.1.2.1 and all of a sudden this problem popped up and we're not entirely sure how to fix. When users go to the FDM URL they get the following three error messages:
1 of 3 Error: Primary Load Balance Server is unavailable -- attempting to use Backup Load Balance Server.
2 of 3 Error: Error retrieving security agent header.
Detail: InnerException1: Please run the Load Balance Config Manager and specify a username and password for DCOM.
InnerException2: Retrieving the COM class factory for component with CLSID {E652643D-6CC1-48AC-915D-01842B04F292} failed due to the following error: 80070005.
3 of 3 Error: Please run the Load Balance Config Manager and specify a username and password for DCOM.
Detail: InnerException1: Retrieving the COM class factory for component with CLSID {E652643D-6CC1-48AC-915D-01842B04F292} failed due to the following error: 80070005.
When logging in through the workbench we do not receive any error messages. Does anyone have any thoughts on what would cause this or how we can fix? Is it as simple as inputting the service account credentials again? Also, how do we prevent this from happening again in the future?
Thank you,
Jason

Answer 1

Check the FDM Load Balance Server DCOM Object {E652643D-6CC1-48AC-915D-01842B04F292} Security Tab. Verify that the only user accounts listed is the FDM Service Account and the only Groups listed as Everyone and SYSTEM. If there are any other user accounts listed, remove them from the list. This should be performed for "Launch and Activation Permissions" and "Access Permissions", Do not adjust "Configuration permisions".
Once you do this, re-set IIS by opening a command prompt and typing iisreset and hit enter. This will recycle the IIS Services.
Re-launch FDM.