Today while installing SCOM in the lab faced a strange issue. When I tried to open the web console I faced this error…
Microsoft.EnterpriseManagement.Presentation.DataAccess.DataProviderException: An error occurred executing the command: [Microsoft.EnterpriseManagement.Presentation.Security!DeclaredAssemblyDataProvider/GetAssemblies] in provider: [Microsoft.EnterpriseManagement.Presentation.Security.DeclaredAssemblyDataProvider, Microsoft.EnterpriseManagement.Presentation.Security, Version=7.0.5000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]. : Connection session is not found.
The URL I entered was http://scu_scom/OperationsManager . After some checks I tried to open the Web Console by entering http://localhost/OperationsManager and the console opened perfectly. Then I added a DNS Alias http://SCOMWEB/OperationsManager and the SCOM console also worked perfectly.
I installed all SCOM 2012 R2 UR2 components on one server which had the name SCU_SCOM. After some searching on the internet I found a thread in the TechNet forums . It did not solve the issue but it seems that others had also a problem.
Because I have never had this issue before and considering my analysis above, I assume that the “underscore” in the server name is creating this issue. When you try to install and name a Windows server which as an underscore in its name, you get a prompt that this could lead to problems. Well, this is probably one of them.
Conclusion: Don’t use “_” in your server names.
In my case, I didn’t have “underscore” in the server name. iisreset did fix the issue.