LEDBAT Not Correctly Configured in Windows Server 2016

LEDBAT or Low Extra Delay Background Transfer is a TCP Congestion control mechanism available in Windows Server 2016 and Windows Server 2019. LEDBAT helps to utilize the entire bandwidth (e.g. for SCCM packages or Windows Updates) when the network is free and if some other task (e.g. Application) requires bandwidth, it will give priority for that task.

Today I tried to configure LEDBAT in my SCCM environment. It's just a simple task as ticking a checkbox in Distribution Point properties. But in the background it does not get configured correctly due to incorrect TCP Templates.

WSUS: EULA Download in Pending State

Recently at a customer site I encountered below issue, some updates (specifically updates under Update Rollups classification) not syncing because End User License Agreements cannot be downloaded into WSUS.

In Wsyncmgr log there was this error.

Post-Installation Configuration Failed When Re-Installing WSUS on Server 2016

I came across this issue today when I try to remove and re-install SUP and WSUS role from a ConfigMgr (CB) Server running on Widows Server 2016.

As usual I,

Bring Deleted/Declined Windows Update Back to SCCM

Maintaining WSUS and SCCM SUP correctly is an essential task in every SCCM environment. There are great guides on declining superseded updates, maintaining SUP, re-indexing SUSDB out there on web.

There could be scenarios where you need to bring back declined/deleted update/s back to SCCM and deploy. Below are the steps that you need to follow in such a scenario.

Powershell Script to Create SCCM Collections Based on Device Models

In an environment that SysAdmins doesn't have any idea about how many number of device models exists, managing device drivers will be a cumbersome task.

Following is a Powershell script to create collections based on device models that already inventoried by SCCM.

Resolve "Client certificate: None" Issue in a SCCM Client

Few days ago in a project that I involve in to replace a customer's existing SCCM CB infrastructure with a completely new one, I faced this "Client certificate: None" issue in a couple of computers. In their environment there are 2 Stand Alone Primary Site Servers with different site codes; existing and new one. Site is configured to use HTTP or HTTPS.

I was using a script to change the clients' site code and management point from existing to new one. While most clients that I tested changed its site assignment without issue, couple of Windows 10 version 1607 clients had this issue.

Reset Expired Domain Administrator Password in Azure DC

Today I had to face this issue of expired Domain Administrator password in a DC hosted in Azure IaaS. This is my SCCM lab environment which has a single DC and completely resides in Azure. The worst thing happened to me was, expired passwords of;

1. Local Admin account which I created at the time of creating the DC VM and also the Domain Admin.
2. Other only Domain Admin account.
3. SCCM Administrator account.

at the same time.