Did you get this error when adding an AD group or an AD User? I get this error when attempting to add a group. Users will add.

I noticed you are receiving the same error I am reciving on two of my SSRS 2012 servers. Have you found a resolution?

library!ReportServer_0-81!db8!09/27/2016-09:45:38:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.UnknownUserNameException: , Microsoft.ReportingServices.Diagnostics.Utilities.UnknownUserNameException:...

You guys might want to have a look at these:

http://paulouyang.blogspot.com/2015/05/data-collection-mdw-errors-after.html

https://support.microsoft.com/en-us/kb/2793580

https://connect.microsoft.com/SQLServer/feedback/details/1138283/data-collection-query-statistics-collection-set-not-working-anymore-after-upgrade-to-sql-server-2012-sp2

Running the following query should give you SSIS errors.

use msdb

select * from dbo.syscollector_execution_log_internal

where start_time >=...

Also found this:

Posted by ChrisAllenNC on 6/15/2015 at 12:11 PM

We've been able to resolve the issue by taking the SSIS packages off of an instance that wasn't updated yet and...

Also, if you manually stop the MDW collection jobs, those DCEXEC processes should also close themselves.

Good luck. I have a call into Microsoft on this issue this very moment. Please familiarize yourself with SQL 2012 SP2 CU7. There is supposed to be...

This looks old, but I had a similar situation. This is how I fixed it.

--Step 1: Check SQL Agent Job Ownership

--For SQL 2008-2012

...

All collections are running without errors. I do not have any clustering. I don't get it. Currently, every instance is showing up in UCP and I can...

Thanks. I did read that section and again, that applies to "Licensing Individual VMs with Hyper-threading"....not to licensing a full server blade's processor cores for maximum virtualization. That...

I'm not sure I agree with that SSCrazy. Hyperthreading is only supposed to apply in standalone virtual licensing....not physically licensed cores. Do you have a resource where I...

Maybe someone can clarify one part of the documentation that I'm currently having an issue understanding fully. On page 12 of the SQL Server 2012 Licensing Reference Guide (

Mine's very similar, only using SSMS. Was editing a long running query in SSMS when it crashed:

Faulting application name: Ssms.exe, version: 2007.100.1600.22, time stamp: 0x48753da6

Faulting module name: MSVCR80.dll, version:...

I'm not sure I can help with your situation or not, but I recently had upload problems myself. They appeared out of the blue. I reviewed the following...

Have you tried connecting using named pipes?

\\.\pipe\MSSQL$MICROSOFT##SSEE\sql\query

This particular server is on build 9.00.5000.00 SP4. It is SQL Server 2005 Embedded Edition (Windows Internal Database). Thanks!