ConfigMgr 1702: The case of unexplained – Client Peer cache not getting disabled even after disabling it via Client Settings

  Hi Folks, I am back with the unexplained series. Today being the discussion on the new feature called Client Peer Cache introduced in ConfigMgr 1610. Even though the issue in the blog talks about Client Peer Cache still in use when disabled, We will first try to understand the background and some semantics of…


The case of unexplained – ConfigMgr 2012: Mismatch in a User collection members count in Primary and CAS

Hi Folks, I am back again yet with an Unexplained chain 🙂 This one helps to understand the difference between evaluation of a user collection and device collection. Hope you will find it useful. – UK


ConfigMgr 2012 DRS Initialization Internals

Hi Folks, I have tried explaining the DRS Initialization internals so that we have better understanding in troubleshooting the issue as Initialization is a major part of troubleshooting in DRS cases. I have used some techniques to stop the messages in the SQL Service broker. This is for educational purposes and we should not touch…


SQL Service Broker and MSDB wrt ConfigMgr DRS

Hi Folks, I came across this weird issue where the messages were stuck in the sys.transmission_queue and we do not see the to_broker_instance column for these messages. It was empty, meaning the message was not yet able to identify the routing service at the receiving end. The rest other sites working meant we had the…


The case of the unexplained – Application Deployment Monitoring reports: Which one to rely?

Hi Folks, The mismatch between the error is explained at: I worked on checking the different views for deployment status for monitoring for the deployment of Applications across the different places– 1. Pie chart on the console- ====================== “Top Level” deployment report (i.e. Monitoring à Deployments and look at the status under “Completion Statistics”)…


ConfigMgr 2012 R2 – Multiple SUP scenario: Clients not failing over to the other SUP

Hi Folks, For those who are not aware how Multiple SUPs selection and failover works in ConfigMgr 2012 SP1 onwards , Kindly refer below – This says – So what determines a scan failure, and how does the client react to these conditions?  Scans can fail with a number of retry, and non-retry error…


ConfigMgr 2012 Hardware Inventory Resync and BADMIF Internals

Hi Folks, This post will help you understand the flow of Resync of Inventory in the ConfigMgr 2012. There are many scenarios when a resync can be generated; 1. If we miss a delta inventory. 2. If the get a badly formatted MIF. (E.g. There is a column mismatch or a datatype mismatch) So below…


The case of PullDP notification not getting generated on ConfigMgr 2012 R2

Hi Folks, Recently had an issue where the Package does not get installed to a PullDP. Frankly, I never worked on PullDP as a concept itself. So this was an interest – So what happens when you target a package to PullDP? – We create a job by the PkgXferMgr to send the same. But…