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Dynamics 365 Community / Forums / Microsoft Dynamics CRM (Archived) / 2 CRM 4.0 on-premise s...
Microsoft Dynamics CRM (Archived)

2 CRM 4.0 on-premise servers to same database using NLB and not plugins working

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Posted on by Community Member

I have recently added an additional server with CRM installed to a configuration that contained a CRM server and a SQL database server. Per the installation guide, I was instructed to setup a NLB to handle traffic to the 2 CRM servers and add the NLB to the MSCRM_CONFIG database. I have successfully setup the new CRM server, configured the NLB for the 2 server, and updated MSCRM_CONFIG with the NLB but when applied updates to record via the UI for the new CRM server I am getting "unable to load plugin assembly" errors. 

What additional step(s) do I need to perform to resolve this error and have all existing plugin to trigger as expected?  

 

My Setup:
NLB  --> CRM server 1    --> SQL server

         --> CRM server 2

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  • Wayne Walton Profile Picture
    Wayne Walton 13,730 on at

    It's been a long time since I've done CRM 4 load balancing, but that sounds like the old issue of not enabling "sticky sessions".  You need users to stay with the front-end they're on to make sure all plugins can retain context to the user.

  • Community Member Profile Picture
    Community Member on at

    Thanks for you response. How do you enable sticky sessions?

  • Wayne Walton Profile Picture
    Wayne Walton 13,730 on at

    docs.microsoft.com/.../cc778263(v=ws.10)

    You want to look for Affinity, and the type you want is Single, if I recall.

  • Community Member Profile Picture
    Community Member on at

    Thanks for the assistance Wayne. I got my Network team to set cookie persistence/sticky sessions enabled in the load balancer but the plugins aren't getting triggered consistently from the new server when records are added/updated. Do you know what could be causing this inconsistency? Is it possibly how the plugins are registered?

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